- Japanese (Native)
- English (Second-language / CEFR B1)
- Fundamental Information Technology Engineer (2025 / ITSS level2)
- 🍋 Lemon's Resting Area (Administrator)
- 🌿 Ivy Cafeteria (Ex-officio) / GitHub
- 📕 Alice Project (Ex-officio) / GitHub
- ⚙️ KDE Community (User)
- 🌸 Japan KDE User Group (Moderator, I18n supporter)
- 🟣 .NET Foundation (Member) / GitHub
- 🐧 MauiGtk Community ((Sub-)Manager) / GitHub
- Misskey.io: @lemon73
(Fediverse - You can contact me via ActivityPub such as Misskey, Mastodon, Threads and others) - Matrix: @lemon73
- GitHub: @Lemon73-Computing
- GitLab: @lemon73
- KDE Invent: @futurelemon
- Lemonium (Japanese, English)
- Alice Docs (Japanese, English)
