GUNMA, JAPAN — SINCE 2026

FIVELIVE.

AI tools for people who live, sell and work in Japan. Five shipped, five in the works — all built by one person.

PRODUCTS (12)

The products, and where each one stands

Live opens the published product. In progress is a real project, not published yet. Planned is announced, with nothing live to check. Hover (or move through with the keyboard) to see the stack behind each one.

SAAS · MARKETPLACELive

Mercari Pro App

Photograph the item and get a Japanese title, description, hashtags and suggested price.

Claude APISupabaseStripe
GUIDE · E-BOOKLive

Manual Prático Mercari Japão

From zero to first sale, with account, listing and shipping checklists in PDF.

LovableSupabaseStripe
ASSISTANT · DOCUMENTSLive

Wakaruapp

Photograph an official Japanese letter and get the deadline, urgency and next steps in your language.

Claude APISupabase
AUTOMATION · SUPPORTLive

LINE Lead AI

Replies, classifies intent and nurtures LINE leads without leaving a message unanswered.

Claude APISupabasen8n
E-COMMERCELive

Sakura Digital Market

A full store with cart, checkout and accounts, integrated with Japanese payment methods.

SupabaseStripe
AI AGENTIn progress

Niko: Your Creative Partner

A creative partner that studies your niche and voice before suggesting and writing content.

Claude APIHiggsfield
SOCIAL · AUTOMATIONIn progress

Promo Agent

Creates, schedules and measures content for several projects across TikTok, YouTube and Instagram.

Claude APISupabasen8n
MARKETPLACE · SYNCIn progress

EbaySync Pro

Lists on eBay from Amazon and Yahoo Japan, keeping stock and pricing in sync.

Supabasen8n
E-COMMERCE · IMPORTIn progress

Shop USA Japan

Buys from US stores that don't ship to Japan, and delivers to your door.

Supabasen8nStripe
COURSEIn progress

Mercari Masterclass

A video program on selling with Mercari, from brand identity to sales page.

LovableStripe
FINTECHPlanned

TradeLog AI

Trade journaling with automatic result reading.

Claude APISupabase
CONTENT · AUTOMATIONPlanned

SEO Automation Agent

Research, writing and publishing of content in a continuous loop.

Claude APIn8n
Latest ship

What shipped, and when

Latest ship date for every published product.

Latest ship5 live
  • 2026.07.31Manual PráticoLive
  • 2026.07.24WakaruappLive
  • 2026.07.19Mercari Pro AppLive
  • 2026.07.19Sakura Digital MarketLive
  • 2026.07.17LINE Lead AILive
12
Products
5
Live
5
In progress
3
Languages
1
Builder
INFRASTRUCTURE

The stack behind every product

S.01
Claude API
Reasoning
S.02
Supabase
Data · Auth
S.03
Lovable
Interface
S.04
n8n
Automation
S.05
Stripe
Payments
S.06
Higgsfield
Media
ABOUT

Built by one person.

I'm a digital entrepreneur based in Gunma, Japan. I build AI-powered tools that help real people — primarily the Brazilian community in Japan — work smarter, earn more, and create freely.

Every product in this lab is designed to solve a problem I've seen firsthand, built on modern AI infrastructure, and shipped with a focus on simplicity and results.

CONTACT
Got an idea?
Let's talk

I'm open to collaborations, pilot programs, and feedback.