Hino Sensei - AI Japanese Text Analyzer

Japanese sentence structure analyzer and grammar explainer using AI.

Stop Translating Word-by-Word. Understand the Whole Text. Traditional hover-dictionaries like Yomitan or Rikaikun are great for looking up single words, but they leave you guessing when it comes to complex grammar, tricky particles, and context. Hino Sensei is different. It doesn't just give you a dictionary definition — it acts as your personal AI Japanese tutor directly in your browser. Powered by Google's Gemini AI, Hino Sensei analyzes entire sentences, breaks them down into natural grammatical chunks, and explains exactly how the words connect. Whether you're reading Japanese news, struggling through a light novel, or analyzing Japanese tweets, Hino Sensei helps you bridge the gap between "knowing the words" and "understanding the text." WHY CHOOSE HINO SENSEI? ● Natural Translation Chunking — Instead of intimidating linguistic terms, we break sentences into easy-to-digest English chunks (e.g., "my", "cute cat", "watching anime"). ● Visual Sentence Breakdown — Instantly see the core framework of any sentence. Hino Sensei automatically highlights the Subject (Blue), Predicate/Verb (Amber), and Particles (Red) so you can map out who is doing what. ● Context-Aware Explanations — Japanese relies heavily on context. Our AI tells you exactly what a word means in the specific sentence you are reading, not just the most common dictionary entry. ● Deep Vocabulary & Kanji Details — Click on any word to view its Furigana, Romaji, dictionary form, nuanced meanings, and real-world example sentences. ● Dynamic Grammar Notes — Get bite-sized, contextual explanations for the specific grammar patterns and verb conjugations used in your selected text. ● Seamless Floating Widget — Highlight any Japanese text on any website, and the Hino Sensei widget appears. Click it to slide open the beautiful, distraction-free analysis panel. WHO IS THIS FOR? ● Beginner to Intermediate Learners (JLPT N5–N3) — Stop getting lost in particle soup and complex conjugations. ● Immersion Learners — Read native Japanese content faster without switching tabs to ask ChatGPT or search grammar wikis. ● JLPT Students — See grammar points in the wild and understand their exact nuances. ● Anime & Manga Fans — Finally understand the Japanese you hear and read in your favorite content. HOW IT WORKS 1. Highlight any Japanese text on a webpage. 2. Click the floating Hino Sensei widget. 3. The side panel slides open, delivering a complete structural breakdown, translation, and vocabulary list in seconds. 4. Review your recent analysis history right in the panel. PRIVACY & PRICING — 100% Free & Private Hino Sensei is completely free. To ensure maximum privacy and unlimited use, you bring your own API key. Just grab a free Gemini API Key from Google AI Studio (takes 1 minute), paste it into the extension settings, and start learning. Your key is stored securely on your local device, and your reading data is only sent directly to Google's API for analysis — we collect absolutely nothing.