Individual lessons from 1,500 yen (tax included) / 30min.

One-on-one Japanese class is a classroom specializing in "Japanese as a foreign language", to a consultant of a professional teacher

Conversation training, pronunciation correction, JLPT / BJT exam preparation, business Japanese support etc.

Koharu Japanese Office, an online Japanese lesson, is a foreign language class taught by a professional Japanese teacher by appointment only.

① Please contact us by phone 03-6881-9842 or request a trial lesson from the Contact form.

After confirmation, the person in charge will reply to you.

Toshiyuki Kusuda (representative teacher)

Please let us know your learning goals, start schedule / budget, your instructor, your wishes for the curriculum, and more.

② Confirmation of reservation → Attendance * Trial lesson is a free meeting. Please consider the time of about 30 minutes.

■ Online Japanese lessons * Google Meet, Zoom, Skype, etc. are supported.

■ Shinjuku office face-to-face lesson (* There are only a few seats left. Please contact us for the schedule)

The teacher in charge will propose a schedule for checking your Japanese level and achieving your goals.

Let's talk about your class plan!

[Pick up] Introducing the lesson plan

③ Let's start the lesson. thank you.

Koharu Japanese Office specializes in 1on1 ~ tutoring, and coordinates your class according to your budget and schedule.

* No admission fee is required, and purchases from one frame are accepted.

2,500 yen (tax included) / 60min.etc. 1on1 lesson

4,000 yen (tax included) / 60min. ~ group lesson

● There are two payment methods.

Bank transfer / Credit card payment * Billing from your PayPal account

* Cash payment is also possible for face-to-face classes.

[Frequently Asked Questions] is here. Please see for reference of application.

Now, let's start studying Japanese with the support of Koharu Japanese Office.

We support everyone coming from overseas.

For life and career advancement in Japan, first of all, from the power of Japanese

If you understand Japanese, you can see Japan,

If you can speak more Japanese, Japan will become a more enjoyable country!

All the teachers are looking forward to your lesson request.

In 2022, it will be getting hot and humid gradually, and the summer JLPT production is just around the corner. May it be a wonderful season of breakthrough

Welcome to the Japanese class for one-on-one lessons

We accept reservations for trial lessons every day ⇒ online / * Shinjuku office face-to-face class (only a few left)

Online Japanese lessons & Tokyo area tutor plan

Preparation lesson just before JLPT in July
N5 ~ N1, I will support everyone's passing this year as well!
《NEW !!》 Short plan for online attendance
1,500 yen (tax included) / 30min. ~ 1-on-1
Choose a lesson plan and book

One-on-one lessons / 1,500 yen ~, * Reservations are accepted from one lesson.

Koharu Japanese Office is a professional classroom with a complete reservation system and individual guidance.


Please check here for the availability of lessons (acceptable)

Currently, smooth reservations are possible at almost all times / ① early morning ② am ③ afternoon ④ evening ⑤ night

① Early morning

7: 30 ~ 9: 00

② Morning

09: 00 ~ 12: 00

③ Afternoon

12: 00 ~ 16: 00

④ evening

16: 00 ~ 19: 00


19: 00 ~ 23: 30









Welcome to the Japanese language class in Shinjuku


Office name

Koharu Japanese Office


2-12-13 Shinjuku, Shinjuku-ku, Tokyo 2nd floor

telephone number
Telephone reception hours

9:00 to 20:00 (normal business hours 7:30 to 23:30)

Regular holiday

Open all year round


Toshiyuki Kusuda


Koharu Japanese Office for online Japanese lessons is a classroom in Shinjuku. It is conveniently located a 1-minute walk from the nearest station, Shinjuku Sanchome Station (Toei Shinjuku Line), and an 8-minute walk from the east exit of JR Shinjuku Station. We are here. Nowadays, there are a lot of people who come to Japan from each country and are active in their work and study.
Professional teachers with abundant experience and achievements will respond to the needs of Japanese in every situation such as daily life and communication at work. If you want to start Japanese, this is a private 1-on-1 lesson at Koharu Japanese Office.

All the teachers are looking forward to your visit.

About us

Being a Japanese language school

Personal training language class

Welcome to Koharu Japanese Office for online Japanese lessons

Our lesson is a personal training of words that can be ordered from one frame. We offer lessons for "Japanese as a foreign language" 365 days a year, 365 days a year.

We hope that you will make use of the Japanese language time learned by professional teachers to advance your career.

Offices in Shinjuku and Ikebukuro etc. accept new applications and lessons every day, and face-to-face lessons are widely delivered to the Tokyo area by professional teachers on business trips.

From here in central Tokyo, we will deliver tutoring in Japanese to all over the world regardless of time and place.

That is the personal training service of our'Japanese Language School'Koharu Japanese Office.

Koharu Japanese Office opened in early summer 2016 from a small tutoring service. The Japanese language class run by the teachers is also wholesale for professional one-on-one lessons, so the price can be set attractively, and it is one of our pride that you can choose with high quality and low price cost performance.

Let's start Japanese,

If you think so, please try the private lesson at Koharu Japanese Office in Shinjuku / Tokyo.

All the teachers are looking forward to receiving inquiries from everyone who is trying hard to learn Japanese.

* The following is a partial excerpt of greetings from the old system of Koharu Japanese Office (formerly "Japanese Counseling Center Koharu"), a business trip tutor, as a basic educational philosophy.

(Omitted) By the way, suddenly, the most widely used language in the world today is Yahari English. The way of thinking will change depending on the way of thinking and perspective, but Chinese, Spanish, Portuguese, French, German, ... There are many different languages, and there will be as many languages as there are cultures and ethnic groups. Now that globalization has progressed in the 21st century, the distances around the world have become much closer, and we have become closer to us both in foreign countries and outside the sea. Among them, in addition to the pure bilingual and trilingual people who have been nurtured in the environment, the number of people who have acquired the second and third languages as foreign languages and can speak more than two languages freely is increasing. .. If we can handle languages deeply and widely, the field of activity will become wider and wider, and it can be said that human resources who have mastered multiple languages are currently being sought in every situation. A large number of foreigners have come to Japan, and the number of foreign nationals living in "the foreign country of Japan" is steadily increasing, not just tourists.
The Koharu Japanese Language Office sincerely hopes that all those who learn the foreign language of Japanese will enjoy experiencing and absorbing Japanese culture at the same time as one academic discipline of language. We support foreigners who have had a relationship and have consulted in Japanese so that learners can perform as they wish in all situations from daily life to business scenes in the workplace and academics. I have done it. We are trying to "lessons with concentration and continuity" mainly by individual guidance by experienced professional Japanese teachers, and many users and teachers are also two-legged race to achieve their own goals I have walked. When I recall, there were a surprising number of scenes of the Japanese language class, all of which were impressive. Going forward, we will continue to expand our language learning support so that the Koharu Japanese Language Office in Shinjuku will continue to be a Japanese language class that can be selected by all those who are learning Japanese.

I hope that it is irreplaceable and valuable for all students to become familiar with and learn about Japan and the Japanese language.

I want you to know more about Japan

Japanese is a skill that enriches your life and work in Japan.

Learning a foreign language called Japanese brings various benefits to those who are learning, and at the same time, it must be of great meaning and value to the people around Japan. If everyone who hits the door of the Japanese language class improves their language skills, they will be able to connect with a large number of people around them. Whether it's a trivial everyday scene or a business scene, you're sure to find new discoveries and wonderful encounters. And in the process of learning Japanese, it is not just a matter of concentrating on the genre of'study', it is a process of learning and discovery that requires a lot of effort, and at the same time, it is something that makes you know Japan fundamentally. I hope you will be. I think that the destination for learning Japanese language has a goal that presupposes contact with the Japanese people and Japanese culture. Regardless of the content, I would like you to enjoy and learn about'Japan'itself and culture, sometimes worry, and sometimes laugh and find'Japan' in your own way. Knowing the language is exciting to know different cultures and people's hearts, unexpected encounters and amazing experiences. Helping to build a bridge between you and Japan is our unchanging educational philosophy of Koharu teachers.

Koharu Japanese Office is a Japanese'school'for personal training. If you want to start learning Japanese, please take a trial lesson at least once. I'm sure you will find the time you are looking for to learn Japanese, and the teacher who thinks "I wish I had such a teacher!". The good thing about personal training is that you can easily coordinate your learning frequency, environment, and budget according to your goals.

The Shinjuku office (in addition to Ginza, Ikebukuro, etc.) offers free trial lessons and Japanese counseling for attendance every day. We accept daily orders for both online and face-to-face lessons.

If you want to speak Japanese, try your best with a professional one-on-one lesson.

The teachers at Koharu Japanese Office will do their utmost to support your learning and career advancement.

● From the first Japanese startup

● Simple conversation training

● Support for business, entrance exams, and exams

From pronunciation and speech correction for advanced users

For learning and consultation of Japanese, please leave it to the classroom in Shinjuku, online Japanese lessons and the Koharu Japanese office of tutoring service.

2020 is a really difficult time, but we look forward to welcoming you to everyone who works hard in Japanese with a complete learning support system.

No matter where you look, adversity, but you never lose! I also believe that the seasons will surely change. Let's always look ahead and do our best this year! !!

Koharu Japanese Office Teachers

Representative teacher Toshiyuki Kusuda