Sensei on my Side

Meet Eiko-sensei, a retro-RPG style English Coach in your side panel! 100% private and offline, powered by Gemini Nano.

"Eiko-sensei is always right next to you—helper-coach and companion all in one!" Sensei on my Side is a secure, 100% offline-first Chrome extension that sits comfortably in your sidebar to accelerate your English language mastery. Leveraging the power of your machine's built-in local AI model (Gemini Nano), Sensei translates page contents, extracts vocabulary, generates multiple-choice quizzes, and chats with you in real-time—with absolute privacy. 🚀 Key Capabilities: Anki-style Study Deck: Automatically saves and navigates through past curriculum cards with historical study date tags [YY.MM.DD] so you can visualize your long-term progress. RPG-style Evolving Avatar: Your coach changes visually (Chibi Student 🎒 up to Pristine Wizard 🧙‍♂️✨) next to the TOEIC level slider based on your active language goals! Responsive Conversation Loop: Chat with Sensei about any text segment. Watch Eiko sweat 💦 and think 💭 in real-time while streaming answers, and cheer with sparkles ✨ on successful resolution. Contextual Dictionary Mode: Highlight any single word or short phrase. Sensei automatically shifts from page summary to dictionary layout—delivering local translations, business synonyms, and example sentences. 🔐 100% Offline & Private: Zero cloud connections. All processing happens locally on your CPU/GPU. Your scraped pages and chat histories never leave your computer, making it completely safe for reading corporate docs and internal work tool pages. ⚙️ Quick Setup Guide (Required to Run): Because this extension runs completely locally, it requires enabling Chrome's built-in Prompt API. Follow these steps to activate: Navigate to chrome://flags in a new tab. Enable #prompt-api-for-gemini-nano (Set to Enabled). Enable #optimization-guide-on-device-model (Set to Enabled BypassPrefRequirement). Click "Relaunch" to restart Chrome. Open chrome://components in a new tab, find "Optimization Guide On Device Model", and click "Check for update" to download the local AI model bundle. Reload Sensei in the side panel, choose your Target Score, and start learning on any webpage!