Chapter 2: Recent Project Portfolio
▶ Chrome Extension: 🍊 ROOM SQUEEZER
AI scores rental listings against your own criteria and ranks them by fit — a Chrome extension (2nd in the SQUEEZER family)
↑ ROOM SQUEEZER — Enter your priorities; AI scores every listing and ranks by fit
Value Proposition
- ✓ Your Axes, Not the Site's: Enter up to 4 priorities (rent, walk to station, layout, age, south-facing, pet-OK...) and AI scores every listing and ranks by fit
- ✓ Station-Level Precision: Prefecture → ward, or train line → station — pinpoint the right area instead of burying it in a broad search
- ✓ Runs in Your Browser: Reads the listings you'd see anyway; key and data never leave your machine
- ✓ BYOK, App Free: Runs on the user's own Claude API key — a few yen per search
Technical Features
- Core Tech: Chrome Extension Manifest V3 (JavaScript ES6+) / Cloudflare Workers / Cloudflare Pages / Claude API (Haiku)
- In-Browser Collection: chrome.scripting.executeScript reads the rental listing page in the user's browser — no server-side fetch
- Criteria-Based AI Scoring: Up to 4 priorities + NG keywords → per-axis 0–5 stars, total fit score, one-line trade-off
- Area Drill-Down: Prefecture → full ward list, or train line → station (station list fetched live)
- IP Protection: Evaluation prompt & API key server-side; client obfuscated, Worker token-gated
Differentiation Points
- Ranked by Your Axes: The seeker's own priorities drive the ranking, with an AI trade-off note per listing
- Station-Level: Drill to a single station so the right listings aren't buried
- Shared Factory: Same extension + Worker engine as JOB SQUEEZER — second in the SQUEEZER series
▶ Chrome Extension: 🍋 JOB SQUEEZER
AI scores job listings against your own criteria and ranks them by fit — a Chrome extension
↑ JOB SQUEEZER — Enter your priorities; AI scores every listing and ranks by fit
Value Proposition
- ✓ Your Axes, Not the Board's: Enter up to 4 priorities (wage, proximity, remote, shift, no-experience-OK...) and AI scores every listing and ranks by fit
- ✓ Job-Type Agnostic: From software engineers to part-time bakery staff — anything searchable on the board
- ✓ Browser-Context Crawling: Reaches listings that reject datacenter IPs, because the extension collects from the user's own browser
- ✓ BYOK, App Free: Runs on the user's own Claude API key — a few yen per search
Technical Features
- Core Tech: Chrome Extension Manifest V3 (JavaScript ES6+) / Cloudflare Workers / Cloudflare Pages / Claude API (Haiku 4.5)
- In-Browser Crawling: chrome.scripting.executeScript injects DOM extractors into the board in the user's browser — bypassing datacenter-IP blocks (HTTP 403) that defeat server-side scraping
- Criteria-Based AI Scoring: Up to 4 user priorities + NG keywords → per-axis 0–5 stars, total fit score, one-line trade-off per listing
- Thin-Client + Backend Split: The Cloudflare Worker holds the evaluation prompt and calls Claude; the extension only collects and renders
- IP Protection: Distributed client JS is obfuscated (javascript-obfuscator) and the Worker is gated by a shared token to block free-riding copycats
Differentiation Points
- Ranked by Your Axes: The seeker's own priorities drive the ranking, with an AI trade-off note per job
- Browser-Context Crawling: Runs where server-side scrapers get blocked — an extension-only advantage
- IP-Protected by Architecture: Evaluation logic stays server-side; the client is obfuscated and token-gated
- Job-Type Agnostic: One tool for every role, from engineering to part-time
▶ SaaS Product: WAKU BOOKING
Hotel Reservation & Payment Engine — Integrate with Any Site via a Single URL
↑ WAKU BOOKING — Full booking and payment flow, fully branded as the property
Value Proposition
- ✓ Zero White-Label Footprint: Emails, booking form, and cancellation pages are 100% the property's brand. WAKU's name never appears to guests
- ✓ Single-URL Integration: Replace the “Book Now” button link — no app, no CMS changes, zero dev cost
- ✓ Stripe Connect Direct Revenue: Each property links their own Stripe account. Revenue goes directly to the owner, never through WAKU
- ✓ Cross-Category Design: Hotels, ryokans, vacation rentals, coworking — one Unit model, any property type
Key Features
- Multi-Step Booking Flow: Dates → grade → room → plan → guest info → payment
- Stripe Payment Intent + Webhook: Auto-confirm on payment, auto-expire unpaid reservations after 30 minutes
- Stripe Connect Express: Properties link their own Stripe account — revenue goes directly to the owner (Destination Charges method)
- Guest Self-Cancellation: Cancellation policy-based refund calculation + automatic Stripe refund
- Automated Emails: Confirmation and cancellation emails sent from the property’s name (WAKU hidden)
- Staff Front Board: Today’s check-in/check-out, walk-in booking, phone cancellation handling
- Price Calendar: Per-day multipliers, tax-inclusive/exclusive settings
Tech Stack
Differentiation Points
- Zero White-Label Footprint: Guests never see WAKU. Every touchpoint is the property’s brand — a design philosophy, not a feature
- Direct Revenue via Stripe Connect: WAKU never handles or stores property revenue. Owner-first trust model
- Fraction of Enterprise PMS Cost: Positioned against major PMS players (e.g. Jinya Connect) for small-to-mid independent properties
- On-Site Setup + Monthly Support: First delivery is in-person. Staff are trained to self-manage before handoff
Status: Released - Product Page
▶ SaaS Product: LOCATION MASTER DX
Browser-Based Navigation + Cloud Management for Professional Drivers — Built-in Nav, No App Switch Required (¥1,280/month)
↑ LOCATION MASTER DX - From stop tap to full navigation — all without leaving the app
Value Proposition
- ✓ Built-in Navigation: No external browser switch. Tap a stop or landmark and route guidance, voice directions, and auto-rerouting all run inside the app
- ✓ Hands-Free Operation: Voice search + compass mode — full operation from a dashboard mount, from destination input to on-site tracking
- ✓ Instant Bus Stop Reference: OSM Overpass real-time overlay within 500m
- ✓ Train Proximity Ticker: Auto next-departure display within 300m of registered station
Key Features
- Built-in Navigation: In-app route guidance, voice directions, and auto-rerouting via Google Maps Directions API — no external browser required
- GPS Compass Tracking: Map rotates with heading; one-tap follow mode toggle
- Voice Search: Hands-free destination input via Web Speech API (Japanese)
- Landmark Management: 12 categories + custom, cloud sync, multi-device support
- Bus Stop Overlay: Real-time bus stop names on map within 500m (OSM Overpass API)
- Train Timetable Ticker: Automatic next-departure display when within 300m of registered station
Tech Stack
Differentiation Points
- Navigation Stays In-App: No switch to Google Maps or Apple Maps. Train delay ticker and stop lists remain visible while navigation runs continuously
- Voice Guidance + Auto-Reroute: Turn-by-turn voice directions and automatic recalculation on deviation — eyes stay off the phone
- Upgrade to LOCATION MASTER: All standard features plus built-in navigation at ¥1,280/month
Status: Released - Product Page
▶ SaaS Product: SPEAK OUT
Browser-Based AI Meeting Minutes — No App, No Gadget Required
↑ SPEAK OUT - Record → Transcribe → Minutes, all in-browser at ¥200/session
Value Proposition
- ✓ Zero Installation: No app download, no dedicated device. Everything runs entirely in the browser — record, transcribe, and generate minutes in one flow
- ✓ ¥200 Per Session: No monthly subscription. Pay only when you use it — as low as the price of a can of coffee
- ✓ Multilingual Support: Processes audio in multiple languages. Output minutes in your preferred language
- ✓ Your Evidence on Record: Eliminate "I never said that." Meeting records that protect you and your team
Key Features
- In-Browser Recording: One-tap recording via MediaRecorder API. Supports 30+ minutes of continuous audio
- AI Transcription: Audio files processed directly by AI for high-accuracy text output
- Automated Minutes Generation: Structured, professional meeting minutes optimized for business conventions and formal language
- Speaker Diarization: Identifies individual speakers automatically — "who said what" clearly documented (ELITE version)
- Share Links: Share generated minutes via URL. Non-members can access for ¥200 per download
Technical Features
- Server-Side API Processing: All AI API calls handled server-side. Only internal endpoints exposed in the browser — zero vendor leakage
- Chunked Audio Processing: Oversized audio files split in-browser → processed server-side → transcripts merged before formatting
- Dual-AI Pipeline: Transcription and speaker separation by one AI; meeting minutes formatting by another — each optimized for its specific task
Differentiation Points
- LP Is the Product: Recording UI lives directly on the top page. Start using without signup — lowest possible barrier to first value
- No Subscription = No Cancellation Anxiety: ¥200 per use eliminates the psychological friction of recurring billing
- Sister Product of Here4U: Built on the same CSS architecture and design language as here4u.jp. Consistent brand trust across the THINK DESIGN product family
Status: Released - Product Page
▶ SaaS Product: LOCATION MASTER
Browser-based Cloud Service for Route, Stop & Landmark Management — Built for Professional Drivers
↑ LOCATION MASTER - GPS Compass Navigation & Driver Support SaaS (¥980/month)
Value Proposition
- ✓ Zero Installation: Instant URL access, zero friction deployment on commercial vehicles
- ✓ Hands-Free Operation: Voice search + compass mode — full operation from a dashboard mount
- ✓ Instant Bus Stop Reference: OSM Overpass real-time overlay within 500m
- ✓ Train Proximity Ticker: Auto next-departure display within 300m of registered station
Technical Features
- GPS compass tracking: map rotates with heading, one-tap follow mode toggle
- Web Speech API voice search (Japanese), landmark management with 12 categories + custom
- Bus stop overlay via OSM Overpass API, train timetable via scraping + DB storage
Status : Released - Product Page
▶ Internal System: DEVILLE COLLECTOR
Next-generation information asset platform for strategic business intelligence
↑ DEVILLE COLLECTOR - Detailed technical information disclosure is restricted
Value Proposition
- ✓ Strategic Intelligence: Systematic collection and structuring of public information
- ✓ Trade Secret Protection: Core technology managed as corporate confidential
- ✓ VPS-Based Operation: Secure closed environment for authorized users only
- ✓ Data Enrichment: Advanced processing through external API integration
Technical Innovation
- Proprietary information collection and analysis engine
- Advanced data structuring from unstructured sources
- Enterprise-grade security for private operations
Status : Completed & Private
▶ SaaS Product: HUNT MASTER
GPS Hunting Log SaaS for Field Operations (Browser-based, PWA-oriented)
↑ HUNT MASTER - GPS Hunting Record App (Offline-First / PWA)
Value Proposition
- ✓ Zero Installation: Instant access via URL or QR code — no app store needed
- ✓ Offline-First (PWA): Fully operational even without cellular reception
- ✓ Cross-Platform: Consistent experience across iOS, Android, Windows, and macOS
- ✓ Local-first Performance: High-speed data R/W via IndexedDB ensures zero lag in the field
Key Features
- Reliable location logging via offline maps and GPS integration
- Detailed capture/sighting logs (Photos, Notes, Species)
- Team session management & information sharing (participants, roles, contacts)
- Hunting Log (PDF) generation for official report submission
- Cloud backup via multi-tenant architecture and server synchronization
Tech Stack
Differentiation Points
- Practical PDF Output: Layouts optimized for official reports with full multi-byte character support
- "Cultivating the Hunting Ground": Persistent visualization — capture and sighting data accumulates on the map, growing the user's personal hunting ground over time
- Field-First Design: Large buttons for gloved operation, one-tap workflow for instant logging
Status : Released - Product Page
▶ SaaS Product: HERE4U
No-Code AI Chatbot SaaS — Single Script Tag, Live in 15 Minutes
Here4U - AI Chatbot Deployment Platform for SMEs (Standard: ¥4,980/month)
Value Proposition
- ✓ Zero-Code Integration: One <script> tag — live on any site in 15 minutes, no developer required
- ✓ Multi-Tenant Architecture: Per-tenant AI character, knowledge base, and prompt configuration via admin dashboard
- ✓ Competitive Pricing: Fraction of enterprise competitors (¥50,000–¥150,000+/month) — Standard ¥4,980, Pro ¥14,800/month
- ✓ Full-Stack Automation: Stripe Checkout + Webhook — signup to live deployment, zero manual intervention
Key Features
- AI character config (name, tone, avatar, system prompt); knowledge base registration (FAQs, service info)
- Voice I/O (mic input + TTS); automatic multilingual support (JA/EN/ZH/KO+)
- Conversation log dashboard; monthly usage tracking; automatic overage billing
- Full account lifecycle: email verification, password reset, account deletion
- Live demo across 4 verticals: hotel, hair salon, medical clinic, restaurant
Tech Stack
Differentiation Points
- One-Line Embed: Non-technical business owners go live without touching existing site code
- IP-Protected Widget: Obfuscated JS prevents reverse-engineering of proprietary implementation
- Proven in Production: Validated at Fujino Transport Co., Ltd. before SaaS packaging
Status : Released - Product Page
▶ SaaS Product: SALES MIA
AI-powered sales email automation SaaS platform
↑ SALES MIA - AI Sales Email Automation Platform
Value Proposition
- ✓ Fully Proprietary AI: No external APIs, zero data leakage risk
- ✓ Multi-tenant Architecture: Complete data separation between companies
- ✓ Full Legal Compliance: Anti-spam and privacy law compliant
- ✓ Affordable Pricing: Basic at ¥1,980/month (1/3 to 1/5 of competitors)
Technical Innovation
- Proprietary in-house AI engine with local processing
- 18 industries support with persona-based optimization
- Enterprise-grade security with JWT authentication
Key Features
- AI Sales Email Generation: 18 industries, persona-based optimization
- Lead Management: Unlimited leads, CSV import, automatic persona estimation
- Sales Sequences: Scheduled automated delivery
- Lead Scoring: Automatic prioritization based on replies and sending activity
Status : Operational - Product Page
▶ Development Project: BY MYSIDE
Next-generation AI assistant development project targeting busy daily life support
↑ BY MYSIDE Development Interface - AI Assistant Platform
Value Proposition
- ✓ Talent Key Innovation: Preventing ambiguous AI recognition through dedicated function keys
- ✓ Hybrid SaaS Model: Local AI processing with online authentication
- ✓ Multi-API Integration: Seamless integration with Google services ecosystem
- ✓ Privacy-First Design: All confidential processing handled locally
Technical Innovation
- Revolutionary talent key system for precise AI function control
- Complete web-based architecture requiring no installation
- Advanced voice recognition with Vosk engine integration
Status : On-premise version completed
▶ Development Project: SCAN ROUTE
Next-generation efficiency system for delivery industry optimization
↑ SCAN ROUTE Development Interface - Delivery Optimization System
Value Proposition
- ✓ Patent-Pending Algorithm: Proprietary delivery optimization technology
- ✓ Industry-Specific Design: Tailored for delivery industry challenges
- ✓ Scalable Architecture: From individual drivers to enterprise fleets
- ✓ Mobile-First Approach: Optimized for smartphone usage
Technical Innovation
- Revolutionary delivery efficiency algorithms (patent-pending)
- Lightweight responsive web application design
- Real-time processing optimization for mobile devices
Status : In Development
▶ In-house SaaS Product Development: ANTI SWIPER RUBIK
Proof of product development capability generating continuous revenue while maintaining operational costs at near-zero levels Pt.2(approximately ¥10,000 annually)
↑ ANTI SWIPER RUBIK Official Website - Complete SaaS Platform
Value Proposition
- ✓ Proprietary Technology Development: Building new market solutions from scratch
- ✓ Patent-Level Technology: Patent-pending proprietary algorithm development track record
- ✓ Complete In-house Development: Self-contained development system with no external dependencies
- ✓ Commercial-Grade Quality: Development capabilities at the level of actual sales and operational products
Technical Advantages
- Achieved previously impossible multi-directional infinite loops
- Ultra-lightweight design (9KB) with enterprise-level functionality
- Full-scale SaaS product supporting global CDN distribution
Development Background
The development of ANTI SWIPER RUBIK began with a fundamental reconsideration of traditional one-dimensional slider concepts. Through actual operational experience in digital signage and exhibition venues, I confirmed strong demand for grid-based carousels that could deploy content omnidirectionally. To achieve both "true multi-directional infinite loops" and "intuitive navigation experiences" that existing libraries found difficult to realize, I developed a unique algorithm inspired by the Rubik's Cube through AI-assisted design and implemented it from scratch.
Key Features & Technologies
Sales & Distribution Mechanism
ANTI SWIPER RUBIKis offered as a subscription-based SaaS (Software as a Service) product. I handle the entire sales process through my official website (as-rubik.com), which includes detailed product information, demos, pricing plans, and a secure checkout process powered by Stripe.
Customer Success & Hospitality Approach
As part of the ANTI SWIPER family products, I prioritize subscriber success above all else. My hospitality-focused service approach ensures that every subscriber can utilize my products to their full 100% potential.
Status : Operational - Product Page
▶ Operational SaaS Product: ANTI SWIPER
Proof of product development capability generating continuous revenue while maintaining operational costs at near-zero levels (approximately ¥10,000 annually)
↑ ANTI SWIPER Official Website - Complete SaaS Platform
Value Proposition
- ✓ Full-Stack Development Capability: Integrated development from frontend to backend and payment systems
- ✓ Operational Track Record: Experience developing and operating actual commercial services
- ✓ Monetization Know-how: From SaaS product monetization strategy to implementation
- ✓ Security Implementation: Enterprise-level security implementation
Business Results
- Currently operational as a product generating continuous revenue
- Automated billing system through Stripe payment system integration
- Fraud prevention system through API key authentication
Development Background
The initial concept for ANTI SWIPER arose from encountering limitations of existing slider libraries in my own web development projects. I needed a slider that could provide seamless infinite loops without visual glitches, operate smoothly on all devices, and efficiently handle diverse content types. Unable to find a solution meeting my stringent requirements, I decided to build my own from scratch using AI co-creation development methods.
Key Features & Technologies
Sales & Distribution Mechanism
ANTI SWIPER is offered as a subscription-based SaaS (Software as a Service) product. I handle the entire sales process through my official website (anti-swiper.com), which includes detailed product information, demos, pricing plans, and a secure checkout process powered by Stripe.
Customer Success & Hospitality Approach
As part of the ANTI SWIPER family products, I prioritize subscriber success above all else. My hospitality-focused service approach ensures that every subscriber can utilize my products to their full 100% potential.
Status : Operational - Product Page
▶ Multilingual Corporate Website: THINK DESIGN
Showcase of Technical Capabilities
↑ THINK DESIGN Corporate Website - Complete Japanese/English Support
Value Proposition
- ✓ Multilingual Support: International site construction with complete Japanese/English support
- ✓ SEO Optimization: Technical implementation for search engine top rankings
- ✓ Performance Focus: User experience enhancement through high-speed loading
- ✓ In-house Technology Utilization: Implementation examples actually utilizing developed SaaS products
Technical Features
- Custom animation system (Taro) implementation
- All-device optimization through responsive design
- Accessibility compliance (WCAG compliant)
Development Approach
I approached my own website the same way I approach other client projects: starting with thorough target audience research, defining clear objectives, and implementing a design system that could scale across multiple languages and device types. This site functions as both my business platform and a live demonstration of my latest technology capabilities through AI-assisted efficient development processes.
Key Features & Technologies
Design Philosophy
The THINK DESIGN website embodies my core design principles: clarity, functionality, and elegance. Every element serves a purpose, from typography choices that ensure readability across languages to navigation structures that intuitively guide users through my services and portfolio.
