Hidaka Kikuchi
AI & Web Systems Builder | RAG, Internal Tools, Automation
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RAG Knowledge Base — PDF + Cited AI Chat
https://ai.kaisei-global.com/rag
Upload PDFs → members ask questions → AI answers with source citations. Stack: Next.js, Supabase pgvector, Gemini. Live demo.
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Next.js Marketplace & Catalog MVP — Live Production Site
Production luxury multi-vertical catalog I solo-built and maintain: listing grid, detail pages, inquiry/lead capture, and a Python data pipeline into Supabase.
Stack: Next.js, Supabase, Vercel. Live site — not mockups.
Same delivery model as my Contra service ($1,299 one-time MVP builds).
https://www.kaisei-global.com
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Native Japanese UI localization for SaaS and web apps — developer-ready JSON/CSV (next-intl, i18next), not Google Translate.
Deliverables: natural JP copy, EN→JP glossary with tone notes, placeholder and string-length checks so UI does not break.
~1,500 strings per sprint · 2 revision rounds. Available on my Contra profile from $449.
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Product Promo Short Videos — Reels & Shorts
Vertical product promos for TikTok, Instagram Reels, and YouTube Shorts.
• 15–30s · 1080×1920 (9:16)
• Hook in the first 2 seconds · burned-in subtitles
• Brand colors · royalty-free music · 2 revision rounds
Sample edit for a luxury product reel — same style I deliver for SaaS and eCommerce clients.
Available as a one-time project on my Contra profile ($299).
https://youtube.com/shorts/92t-39n6c0k
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