I built Manga Online, a full-stack anime and manga community platform, from technical architecture through production. It includes real-time 1v1 duels, live quizzes, a Canvas 2D combat arena, and community features.
For Manga Online, I audited security across 36 tables, replaced direct client-side writes with secure RPC functions, and fixed XSS vulnerabilities across more than 100 instances. I also implemented offline mode and in-app notifications.
I designed and built Emi Fashion as a multilingual e-commerce site for a client, and created websites for a restaurant and a digital product. In a Family Project, I contributed to website design and development, technical decisions, and deployment.

