Indonesian software engineer, game developer, and Japanese language educator. I make games, build language tools, and contribute to open source.
Most of what I do falls into three buckets: game development, Japanese language tooling, and open-source contributions. The bigger public stuff is Jepang.org, Sentou Gakuen: Revival, and a handful of small tools and datasets I keep offline-friendly and fast.
- Sentou Gakuen: Revival: Massively multiplayer online visual novel built using Godot Engine.
- Steam (EA): store.steampowered.com/app/405680/Sentou_Gakuen_Revival
- Steam Demo: store.steampowered.com/app/3175150/Sentou_Gakuen_Revival_Demo
- Official site: gakuen.org
- Godot Engine: listed in engine credits
- GodotSteam: listed in contributor credits
- Godot Engine ID localization: hosted.weblate.org/projects/godot-engine/-/id/#information
- Jepang.org: Indonesian-first Japanese learning platform covering JLPT, kanji, grammar, vocabulary, anime data, and related tools
- Anime.Jepang.org: anime schedule and database surface for Indonesian users
- Kanji.Jepang.org: standalone kanji reference product inside the broader ecosystem
- Focus areas: Japanese language, JLPT, kanji, datasets, search, and NLP-oriented tooling
- kanji-data: offline-first kanji database for Node.js with build-time sharding
github.com/sepTN/kanji-data - Bunpou Lens: client-side Japanese sentence analysis powered by Kuromoji
github.com/sepTN/bunpou-lens - kotowaza: Japanese proverb dataset with Indonesian and English meanings
github.com/sepTN/kotowaza - kanji-png-gif: programmable kanji stroke-order image generation
github.com/sepTN/kanji-png-gif
- Website: septn.com
- Jepang.org: jepang.org
- Gakuen.org: gakuen.org
- npm: npmjs.com/~septn
- GitHub: github.com/sepTN





