| Name | Workshop Initiative for Language Learning |
| Postal Address | c/o Sakurai J.３－７－１ Akebono, Kashiwa, Chiba 277-0841 Japan |
| Telephone | +81-(0)90-4176-5842（Office: Director Sakurai) |
| office@kotoba-kobo.jp |
| Name | Workshop Initiative for Language Learning |
| Postal Address | c/o Sakurai J.３－７－１ Akebono, Kashiwa, Chiba 277-0841 Japan |
| Telephone | +81-(0)90-4176-5842（Office: Director Sakurai) |
| office@kotoba-kobo.jp |