Business ApplicationMay 27, 2026
AI Automation Pays Off in 3 Months
Stop guessing if AI is worth it. Real ROI from automation comes faster than most small business owners think.
Read more →This companyruns on AI.
We prove that a company can run on AI — by running one ourselves. Exploring what's possible, contributing to society.
Our Vision↓Scroll
About
Not an experiment. Proof.
The blog on this site is written by AI. Sales, strategy, operations — all AI-driven. nanakazoku is its own proof of concept.
That's why we can say it: AI works for your business too. We'll build the same system for you.
Mission
From 'using AI' to 'running on AI.'
Vision
Build the world where AI runs companies — starting now.
Services
What we do.
We implement what we've already proven in our own company.
01
AI Agent Development
Design and build AI agents that autonomously handle sales, hiring, and communications. We build systems that let AI do what humans shouldn't have to.
02
Business System Development
Build AI-native business systems from scratch. We restructure your workflows so AI can operate within them effectively.
03
AI Strategy Consulting
Start with 'where do we begin?' We map your challenges and design a high-ROI roadmap for AI adoption.
Pricing
Pricing.
First consultation is free. Feel free to reach out.
AI Agent Development
Lite
¥80,000+Chatbots, FAQ automation, standard email processing
Standard
¥150,000+Business automation agents (doc generation, data aggregation, notifications)
Custom
Contact usComplex AI systems, integration with existing systems
Business System Development
Lite
¥80,000+Simple management tools (client lists, task tracking)
Standard
¥200,000+Business management systems (orders, invoicing, progress tracking)
Custom
Contact usLarge-scale systems, API integrations
Maintenance (monthly)
Optional, post-deliveryBasic
¥10,000/moBug fixes, server monitoring, minor changes
Standard
¥20,000/moBasic + 1 feature addition/mo + priority support
※All prices exclude tax. 50% upfront, 50% on delivery.
Book a free consultation→Works
Work.
Built it ourselves. Proved it ourselves.
AI-Driven Website2026
nanakazoku.com
Our own site is our first case study. A bilingual Next.js website, a blog written by AI every morning, a contact form that generates a full proposal draft in under 30 seconds — all built with AI as co-engineer. This site is still running.
Next.jsClaude APIGitHub ActionsPHPFTP Deploy
100%
AI-Written Blog
< 30s
Proposal Generation
Daily 7AM
Auto-Update
2 langs
JA / EN
Technical Documentation Site2026
claudecode.nanakazoku.com
A comprehensive Japanese guide to mastering Claude Code. 83 pages of content co-created with AI, built with Astro and Starlight. We don't just talk about using AI — we built a site that teaches the exact tool we used to build it.
AstroStarlightClaude CodeGitHub ActionsFTP Deploy
83
Content Pages
20+
Categories
Japanese
Unique Complete Guide
Free
All Content
Team
Leadership.
F
fumiharu
Chairman / Co-founder
“I want to make the world a little better with AI.”
B
bunzaburo
CEO / Co-founder
“My job is to create things people don't yet know they need.”
Insights
Latest articles.
AI StrategyMay 26, 2026
Choosing the Right AI Tool Makes or Breaks Your Business
There are hundreds of AI tools out there. Pick the wrong one and you waste both time and money. Learn the right criteria now.
Read more →AI BasicsMay 25, 2026
What You Must Know Before Feeding Company Data to AI
Before inputting business data into AI tools, you need to properly understand the risks of information leakage.
Read more →Changelog
Updates.
This site is our own experiment. Always evolving.
2026-05-24
New
Works section launched
Added a portfolio section. nanakazoku.com itself is listed as Case Study #1. Automated screenshot capture system also built.
2026-05-24
New
Pricing page published
New Pricing section added. Full transparency on AI agent development, business system development, and maintenance plans.
2026-05-23
Improved
Full site copy rewrite
New hero: 'This company runs on AI.' About, Services, Mission, and Vision all rewritten from scratch.
2026-05-23
New
Auto-blog system
GitHub Actions workflow: Claude API generates and publishes a new blog post every morning at 7AM JST.
2026-05-22
Improved
Blog migrated to Markdown
Blog posts moved from hardcoded TypeScript to Markdown files. Easier to add and edit content.
2026-05-20
New
AI proposal generation
Contact form now triggers Claude API to auto-generate a proposal draft within 30 seconds, emailed directly to the owner.
2026-05-20
New
Bilingual support (JA/EN)
Full site available in Japanese and English. Blog posts also available in both languages.
2026-05-18
Launch
Site launched
nanakazoku.com goes live. Next.js site auto-deployed to heteml via GitHub Actions.
Contact
Let's build the future together.
New projects, partnerships, careers. Let's talk.