Kan Ninomiya二宮 貫

I developed Lina, an AI chatbot for LINE, grew its user base to over 10,000, and later transferred the business.

More than 10,000 friends on LINE / Business transfer / Developed in October 2022

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I developed a Japanese Reading Model combining candidate reading lattices and context rerankers, and compared it against public benchmarks.

100% on 66 difficult-reading questions / 91.9% on 260 independent evaluation questions / The comparison model scored 61.9%

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I compared Japanese RAG embedding models using a benchmark of 6 configurations and 2,000 questions.

6 configurations / 2,000 questions / Embedding evaluation for Japanese RAG

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I develop and operate a closed web service portfolio with approximately 5 million monthly page views.

Approximately 5 million monthly page views / Closed web service portfolio

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Provided AI voice-cloning and AI avatar-generation technology. Through FP16 Inc., I provided AI voice-cloning and AI avatar-generation technology used in the program.

2024-05-23 / television

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Planning, development, and test operations. I planned and developed PEOPLE!, a voice-based social app for Gen Z built around short voice posts, and launched a public test.

2024-07-03 / press_release

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I am turning multi-agent development, review, research, and monitoring into an operational system with human approval and observability.

AI agents / MCP / automation / observability

I improve reading estimation, speech-recognition post-processing, and TTS preprocessing using evaluation data and real-world usage logs.

Japanese / STT / TTS / evaluation

I continuously test consumer and developer products with a clear use case, a short path to launch, and room to improve from real usage.

0 to 1 / consumer / developer tools / validation

I publish the same public profile data through HTML, Markdown, JSON, and MCP, creating a public layer that AI can read safely.

public context / MCP / llms.txt / structured data

Agent system combining tool usage, MCP, memory, RAG, workflows, monitoring, and human approval.

AI agents / MCP / RAG / LLM / tool use / automation

Full-stack web service development from 0 to 1, including frontend, API, authentication, data, payments, GraphQL, and public infrastructure.

TypeScript / React / Next.js / Hono / NestJS / GraphQL / Stripe / API

Planning, UI, implementation, App Store release, CI/CD, and feature flags for iOS and Android apps using Expo/React Native.

Expo / React Native / iOS / Android / App Store / feature flags

Development integrating RAG, real-time speech AI, image anomaly detection, fine-tuning, and GPU inference into web and business systems.

TensorFlow / PyTorch / fine-tuning / OpenAI Realtime API / GPU / RAG

Lightweight architecture centered on Cloudflare Workers, CI/CD, logging, monitoring, and staged deployments.

Cloudflare Workers / D1 / R2 / Durable Objects / AWS / GitHub Actions

Processing for integrating Japanese into practical systems, including reading estimation, post-speech recognition processing, OCR, and document generation.

Japanese NLP / STT / TTS / OCR / document generation

Proceeding with requirements gathering, UI/UX, implementation, deployment, automation, and initial user validation as a single workflow.

product design / 0 to 1 / prototyping / operations / growth