🦊
Nihongo Quest
Version 2.0 · 2024–2025
A complete Japanese learning adventure
from N5 beginner to advanced fluency
Typefaces
🔤
M PLUS Rounded 1c
M+ FONTS Project · Served via Google Fonts
Used for all Japanese (kana/kanji) text and UI body copy
OFL 1.1 — Open Font License
🔤
Kaisei Decol
Fontworks Inc. · Served via Google Fonts
Used for display headings and decorative titles
OFL 1.1 — Open Font License
Language Content & Standards
📝
JLPT Alignment (N5–N1)
Vocabulary, kanji, and grammar content is curated to align with the Japanese Language Proficiency Test (JLPT) level guidelines published by The Japan Foundation and JEES.
Custom educational content
📊
BJT Business Japanese Test
Advanced content references the BJT Business Japanese Test framework published by the Japan Kanji Aptitude Testing Foundation.
Reference alignment only
🔬
Spaced Repetition Methodology
The SRS algorithm is inspired by the SM-2 algorithm (SuperMemo, Piotr Woźniak, 1987) and the learning methods popularised by Anki and WaniKani (Tofugu LLC). Stage intervals are independently calibrated.
Independent implementation
📚
Cultural & Historical Content
Historical narratives, cultural descriptions, and travel content are original educational writing informed by public-domain academic sources and official Japanese cultural institutions (Japan Foundation, JNTO, NHK archives).
Original educational content
Photography
📷
Unsplash
Destination, era, and culture photography served dynamically from unsplash.com when the app is online. Photos are attributed to individual photographers on the Unsplash platform.
Unsplash License (Free for commercial use)
🎨
Offline Fallbacks
When offline, photographs are replaced by CSS gradient illustrations and emoji — entirely original, no third-party content.
Original CSS/SVG
Media Platform References (Immerse Module)
ℹ️
Disclaimer
The Immerse module lists titles from Netflix, Crunchyroll, Manga Plus, Viki, NHK World, Funimation, MUBI, Spotify, and YouTube. All titles, trademarks, and associated artwork belong to their respective copyright holders. Nihongo Quest does not host, distribute, or reproduce any copyrighted content — it links to official platforms only. Accessing titles requires valid subscriptions where indicated.
©️
Platform Trademarks
Netflix®, Crunchyroll®, Spotify®, YouTube™, Amazon Prime Video®, Funimation®, Viki®, MUBI®, Manga Plus™, VIZ Media® are trademarks of their respective owners. Use of these names is purely informational and does not imply endorsement.
Technology Stack
🏗️
Vanilla JS · HTML5 · CSS3
Built without any external JavaScript framework. All UI, SRS logic, routing, and data rendering is original code.
No third-party JS runtime
🎨
CSS Custom Properties + Animations
All visual effects (gradients, transitions, animations, confetti) implemented in pure CSS. No CSS framework used.
Original CSS
🤖
Anthropic Claude (AI-assisted development)
App architecture, content generation, and code were produced with assistance from Anthropic's Claude AI assistant.
anthropic.com
⚠️ Legal Disclaimer
No Warranty. Nihongo Quest is provided "as is" without warranty of any kind, express or implied. The creators make no representations about the accuracy, completeness, or fitness for any particular purpose of the language content, cultural information, travel data, or any other material in this app.
📚
Language Learning Outcomes
Nihongo Quest is an educational tool designed to supplement language learning. It does not guarantee JLPT exam success, conversational fluency, or any specific language proficiency outcome. Language learning results vary significantly based on individual effort, time investment, and learning style.
🔗
External Links & Third-Party Services
This app contains links to third-party platforms (Netflix, Crunchyroll, Spotify, JTB, HIS, Unsplash, etc.). Nihongo Quest has no control over the content, availability, pricing, or terms of these external services. We are not responsible for any transactions, subscriptions, or interactions you have with third-party services accessed through links in this app.
🤖
AI-Generated Content
Portions of the content in this app were generated with assistance from AI tools (Anthropic Claude). While efforts have been made to verify accuracy, AI-generated content may contain errors, omissions, or outdated information. Always verify critical information from authoritative sources.
🌐
Travel & Cultural Information
Travel information, prices, schedules, and cultural details are provided for general informational purposes only and may not reflect current conditions. Always consult official tourism boards, embassies, and up-to-date sources before travel. The creators are not liable for any loss or inconvenience resulting from reliance on travel information in this app.
⚖️
Limitation of Liability
To the maximum extent permitted by applicable law, the creators of Nihongo Quest shall not be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising from your use of, or inability to use, this application or any content therein.
Personal & Educational Use Only
Trademark Notices: "JLPT" is a registered trademark of The Japan Foundation and Japan Educational Exchanges and Services (JEES). "BJT" is a registered trademark of the Japan Kanji Aptitude Testing Foundation. "WaniKani" is a trademark of Tofugu LLC. "Anki" is a trademark of Damien Elmes. These trademarks are referenced for educational context only; Nihongo Quest is not affiliated with or endorsed by any of these organisations.
🌸 Nihongo Quest · Version 2.0
© 2024–2025 Nihongo Quest. Educational content for personal use.
Built with ❤️ for Japanese learners everywhere.
日本語の冒険が始まる。Your Japanese adventure begins.