Koshiro . Y
About Me
Lessons
Availability
Reviews
Visited 4 hours ago
Koshiro . Y
Professional Teacher![]()
Teaches
Japanese
Native
Speaks
English
Other
🎓 Certified Japanese teacher with a Master’s in Japanese Language Education | 300+ online lessons |
Teaches
Japanese
Native
Speaks
English
Other
🎓 Certified Japanese teacher with a Master’s in Japanese Language Education | 300+ online lessons |
About Me
Me as a Teacher
My lessons & teaching style
Resume & Certificates
From JapanLiving in Osaka, Japan (02:43 UTC+09:00)
About Me
italki teacher since May 3, 2025InterestsSports & FitnessMusicFoodMedical & HealthcareAnimation & Comics
Hello! My name is Koshiro 🌿
I’m based in Osaka, Japan. I love watching anime and talking with people from around the world! 📺🌎
My students often describe me as a kind and supportive teacher 😊Me as a Teacher
I hold a Master’s degree in Japanese Language Education, specializing in Second Language Acquisition. My research focused on how international students improve their speaking skills and how their social networks during study abroad influence language development.
During graduate school, I completed a teaching practicum at a Japanese university and gained experience as a volunteer teacher in local communities and as a teaching assistant in university classes. I have taught learners from various countries and proficiency levels—from complete beginners to advanced—and have conducted over 300 online lessons.
I also hold Japan’s national certification for Japanese language teachers.My lessons & teaching style
Lessons focus on building communication skills and are tailored to each student’s level and goals. You can study using textbooks or through free conversation, depending on your needs. Whether you're a beginner, preparing for the JLPT, or learning for travel or business, I’ll support you.
🗣 While I’m not fluent in English, I prepare explanations in English when necessary—so beginners can join with confidence!
For all lesson types, I provide a study plan and recommend resources when needed. You’re also welcome to message me with questions anytime—24/7! 📩My teaching material
- Text Documents
- Presentation slides/PPT
- Audio files
- Video files
- Flashcards
- Homework Assignments
Certificates
日本語教員試験合格証書 - MEXT - 2025国家試験の合格と教育実習を終えたことを示す証明書です。この書類も同様に日本名「柳川康士朗 Yanagawa Koshiro」で記載されています。
Certificate verified
日本語教員養成課程修了証 - 立命館大学大学院言語教育情報研究科 - 2025法務省による「日本語教育機関の告示基準」で定められた、日本語教員の要件を満たす単位の取得をしたことの証明書です。この書類も同様に日本名「柳川康士朗 Yanagawa Koshiro」で記載されています。
Certificate verified
Teaching experience
2025 - Current
日本語講師
2023 - 2025
ティーチングアシスタント大学の日本語授業にティーチングアシスタントとして参加。
Education
2023 - 2025
Master's - 言語教育情報日本語教育学を修めました。専門は第二言語習得論で、留学生のスピーキング能力の向上と留学中の社会ネットワークの関係を研究しました。
私は韓国籍で、本名は「SEO KANGSARANG」ですが、普段日本では日本名「柳川康士朗 Yanagawa Koshiro」で生活しています。そのため、「柳川康士朗」と記載されています。
Work Experience
2025 - Current
日本語講師
5.0
Rating
8
Students
20
Lessons
100%
Attendance rate
100%
Response rate
Japanese Lessons
Trial Lesson
5 lessons completed
USD 9.90+
Introductory and Beginner Japanese Course 55min 85min
A1 - A2Language Essentials0 lessons completed
USD 26.00+
Package with 5% off
Free Talk Japanese Conversation Course 30min 45min 55min 85min
B1 - C2Conversation11 lessons completed
USD 16.00+
Package with 7% off
Japanese Conversation Course (with Textbook) 55min 85min
A2 - C2Conversation3 lessons completed
USD 26.00+
Package with 5% off
Travel Japanese Course 30min 55min 85mn
A1Conversation0 lessons completed
USD 16.00+
Package with 7% off
JLPT Preparation Course 55min 85min
A2 - C2Language Essentials1 lessons completed
USD 33.00+
Package with 6% off
Business Japanese Course 55min 85min
B1 - C2Language Essentials0 lessons completed
USD 32.00+
Package with 7% off
Availability
Based on your timezone (UTC+00:00)
2 Reviews
yoki
2 Japanese lessons
先生はよかったで、お勧めします
Jun 8, 2025
Harvey Wu
6 Japanese lessons
I would highly recommend the free talk lessons with Koshiro-san. Since the topic is free, you can either talk about any topic of your choosing, any topic that he chooses, or simply just have a free conversation. Even though I did not have many conversation topics in mind, he always helped guide the conversation and encouraged me to speak about various topics. He will correct your speaking in real-time (if that is what you prefer), and offer feedback after the lesson.
May 20, 2025
Trial Lesson
USD 9.90
Your final payment will be made in USD