Learning languages has never been this fun! Friendly, personalized online Japanese lessons tailored to your goals.
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I'm a certified Japanese language instructor based in Oita City with over 4,000 hours of teaching experience over the past 5 years.
My mission is to make learning fun and easy and bring smiles to students' faces with lots of success in the language.
My lessons are very beginner-friendly. I can tailor lessons to your goals whether you want to work in Japan, pass the JLPT, or study as a hobby. My lessons are laidback, and all materials are prepared by me, so we can focus more on speaking. I can also provide English support throughout your growth — so even if you're not confident in Japanese, you can join my classes with ease.
Nihongo Muscle is the private dashboard every student gets after each lesson — built by fusing the corrections I give you in real time with AI-powered analysis, turning what could just be an hour of conversation into a system you can watch improve. Here's exactly how it works.
Correct sentences are only half the story. After every lesson, your free conversation is scored on five dimensions — cohesion, logic, completeness, naturalness, and development — and drawn as a radar chart laid over your previous lesson, so you can literally see the shape of your speaking change. Every score is backed by your own words from that lesson, with a model sentence showing how to level up.
Every correction from your lessons — grammar, vocabulary, conjugation, particles — is saved automatically and charted lesson by lesson, so you can watch your mistake count go down, category by category.
Every mistake shows exactly what you said, the corrected version, an even more natural way to phrase it, and why it was wrong — so you understand the pattern behind the correction instead of memorizing a single fix. That understanding is what makes a mistake disappear for good.
Real charts track your speaking speed, how much of the conversation is you talking, and how many expressions you've learned. A mistake you keep making gets flagged — and once you stop making it for a few lessons in a row, it's marked as conquered.
Every flashcard and quiz question comes from the vocabulary, expressions, and mistakes in your actual lessons — never generic — and your personal deck keeps growing the longer you study. And every audio clip is Yuya's real voice, recorded in your lessons — never text-to-speech.
Nihongo Muscle works hand in hand with the textbooks we use in class — Genki and Quartet. What you say in each lesson is automatically linked to the textbook's grammar points, so you can always look back and see exactly which grammar you've studied, which patterns you've actually used out loud, and how much of each chapter you've covered.
Yuya introduced me to his new platform, Nihongo Muscle, which has helped me go over my mistakes in our lessons and has helped me practice the new vocabulary I’ve learned through flashcards.
I'd definitely recommend Yuya-sensei to anyone learning Japanese and Nihongo Muscle makes an already excellent lesson experience even better.
Nihongo Muscle has been a fantastic addition to the lessons. After each class, it uses the lesson transcript to create a personalised report showing what we covered, mistakes I made, areas I'm improving in and things I need to keep working on. I particularly like being able to see recurring mistakes over multiple lessons, because it makes it much easier to identify the areas I need to practise.
Nihongo Muscle is an AI integrated app that records your lesson and generates personal feedback for the student. The app tracks your mistakes, creates flashcards from your lessons, and points out areas of growth from your previous lesson. I have found the app and my regular lessons have allowed me to greatly improve my Japanese language skills
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Yuya speaks mostly Japanese to me in lessons, which may sound intimidating to some beginners, but Yuya adapts his speech so you can understand him perfectly. You never feel panicked or rushed to respond as he creates a very safe space for you to practise and take your time. His patience is truly admirable! As a teacher myself, I see his passion and willingness to help his students. He's one of the best teachers
My lessons with Yuya have always been something to look forward to. Every lesson I learn new grammar, verbs and other useful vocabulary, especially during our free conversations during the lesson.
Yuya is also very knowledgeable when it comes to Japanese culture and history. He’s always able to provide answers to my questions about Japan, and about Japanese. We often talk freely during our lessons about our experiences and this gave me the confidence to speak to lots of people when I went to Japan as I felt prepared.
I cannot recommend Yuya enough!
I have been taking lessons with Yuya sensei for over a year now and it has truly been a worthwhile experience. The thought and care he puts into his lessons and his students creates a personal and curated learning environment. Yuya is engaging, funny, well-informed,and easy to talk to. Making each lesson feel like you are talking to a friend. Yuya is always looking for ways to improve his lessons and provide better material to his students. He has even created study applications to enhance his teaching.
I have prepared three courses to fit your schedule. Lessons can include any or all of these topics: JLPT, Grammar, and Free Talk. Choose any course that suits your availability.
