| 1984 | Established as a Japanese conversation school for English-speaking learners. |
| 1987 | Established an advanced preparatory course for learners from the Chinese character sphere. |
| 1988 | Certified as an application agent for status of residence examination by the Immigration Bureau of the Ministry of Justice. |
| 2000 | Designated as an education and training course (Japanese language teacher training course) by the Ministry of Health, Labour and Welfare. |
| 2002 | Increased capacity to 222 students (international students) due to facility expansion. |
| 2005 | Started manners education for business people. |
| 2008 | Received permission from the Ministry of Health, Labour and Welfare for paid employment placement business (13-Yu-303210). |
| 2009 | In 2009, with the support of the Ministry of Education, Culture, Sports, Science and Technology, we began creating a Japanese business communication ability measurement test and conducted trial tests with the cooperation of many companies. |
| 2010 | Started the Business Communication Ability Measurement Test (TCCB). |
| | Started Japanese business communication training (in-company training). |
| 2016 | Increased capacity to 322 students (international students) due to facility expansion. |
| 2018 | Agency for Cultural Affairs-approved course: Academy of Language Arts Japanese Language Teacher Training Course, Acceptance Number [H30020613024] |
| 2019 | Started the Care Communication Ability Measurement Test (TCCB). |
| 2021 | Released a business communication ability measurement test for IT personnel. |
| 2022 | Agency for Cultural Affairs Online Japanese Language Education Demonstration Project Model Curriculum Creation and Implementation School |
| 2023 | Agency for Cultural Affairs Online Japanese Language Education Demonstration Project Verification Committee Member |
| | ・ |
| | To the present. |
