| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Dare mo shiranai bujutsu no hiketsu. | 978-4-7572-1383-8 (4-7572-1383-2) | 2007 | Shun'ya Nagano |
| Motto shiritai bujutsu no gokui | 978-4-7572-1554-2 (4-7572-1554-1) | 2008 | " |
| Soko ga shiritai bujutsu no shikumi | 978-4-7572-1448-4 (4-7572-1448-0) | 2008 | " |