This website is operated by Gakuji Tosho Publishing, a publisher specializing in the publication and editing of educational books.
| Operator | Gakuji Tosho Publishing (学而図書) |
| Established | April 1, 2021 |
| Business Activities | Planning, editing, and publishing of books, primarily educational publications; book sales |
| Address | SOLO Myorenji, Daiichi Tachibana Building 220, 1-4-2 Kikuna, Kohoku-ku, Yokohama, Kanagawa 222-0011, Japan |
| Telephone | +81-45-550-7057 |
| Fax | +81-45-550-7058 |
| Representative | Masahiro Kasahara (笠原 正大) |
| info@gakuji-tosho.jp | |
| Website | https://www.gakuji-tosho.jp |
| Principal Banks | The Bank of Yokohama, Shin-Yokohama Branch; Japan Post Bank, Branch 029; PayPay Bank, Business Sales Department |
| Qualified Invoice Issuer Registration Number | T4810450460789 |