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 😊
Tôi với tư cách là giáo viên
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 800 online lessons.
I also hold Japan’s national certification for Japanese language teachers.
Phong cách dạy & bài học của tôi
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! 📩
ティーチングアシスタント立命館大学 - Nhật Bản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。
Trình độ học vấn
2023 - 2025
Thạc sĩ - 言語教育情報立命館大学大学院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。
Kinh nghiệm làm việc
2025 - Hiện tại
日本語講師Preply
5.0
Xếp hạng
44
Học viên
315
Bài học
100%
Tham gia
100%
Phản hồi
5.0
Xếp hạng
44
Học viên
315
Bài học
100%
Tham gia
100%
Phản hồi
Bài học Tiếng Nhật
Bài học thử
29 bài học đã hoàn thành
USD 9.90+
Beginner Japanese / Travel Japanese 55min / 85min
A1 - A2Chung115 bài học đã hoàn thành
USD 29.00+
Gói bài học được giảm giá 6%
Free Talk Japanese Conversation Course 30min 45min 55min 85min
A1 - C2Luyện giao tiếp118 bài học đã hoàn thành
USD 16.00+
Gói bài học được giảm giá 6%
JLPT Preparation Course 55min 85min
A2 - C1Chung30 bài học đã hoàn thành
USD 30.90+
Gói bài học được giảm giá 6%
Conversation Lessons Using Textbooks (JLPT N3 and above)
B1 - C2Luyện giao tiếp2 bài học đã hoàn thành
USD 27.00+
Gói bài học được giảm giá 6%
Thời gian rảnh
Theo múi giờ của bạn (UTC+00:00)
26 Nhận xét
Sabrina96
34 bài học Tiếng Nhật
Lựa chọn dành cho giáo viên
こうしろう先生の授業はいつも面白くて、楽しいです。私が間違えても、先生は優しく直してくれます。今まで授業は四回しか受けていませんが、先生のおかげでたくさんのことを学んでいます。きっと、JLPTの試験にも合格しやすくなると思います!先生の授業はおすすめです。
先生、色々なことを教えてくれてありがとうございます!
Koshiro-sensei is a very patient and passionate teacher. Even though I've only had four lessons with him so far, I'm already learning a lot. In every lesson, we go through one unit from Shin Kanzen Master (a JLPT preparation book), and once we finish, we spend the rest of the time talking freely. Every time I make a mistake while speaking or reading, he kindly corrects me and teaches me the right way to express what I want to say. I absolutely recommend his lessons!
11 Thg 08 năm 2025
Maria
20 bài học Tiếng Nhật
Lựa chọn dành cho giáo viên
It was my first lesson with Koshiro sensei, but surely not the last one. We discussed my current level and studied self introduction and numbers. Everything was explained to me in an understandable way in the nice and friendly atmosphere. ありがとうございます!
19 Thg 07 năm 2025
Jack Linton
7 bài học Tiếng Nhật
In my first couple of months of lessons with Koshiro Sensei, I've gotten way more comfortable speaking basic Japanese, and I look forward to each lesson! I've been doing conversational lessons, and we end up with a whiteboard of words and phrases I struggled with in the lesson for me to study each week, which has been great for increasing my consistency and increasing my progress with the language in several areas. Definitely planning to continue my lessons for the foreseeable future!
3 Thg 12 năm 2025
Atsu Suzuki
14 bài học Tiếng Nhật
Lựa chọn dành cho giáo viên
I've been taking lessons from Koshiro for several weeks now and I always look forward to our lessons. We do free talk, and not only is he very friendly and a great conversationalist, but he diligently listens to what I'm saying and makes detailed notes on my grammar and word choices. I feel that my Japanese conversational ability is improving every week thanks to Koshiro, and I highly recommend him if you're looking to improve in your ability to make conversation in Japanese.