| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Hora sokkuri. | 978-4-7746-1121-1 (4-7746-1121-2) | 2009 | Accototo. |
| Ushiro ni iruno daare | 978-4-344-01494-7 (4-344-01494-4) | 2008 | " |
| Ushiro ni iruno daare. nohara no nakamatachi | 978-4-344-01496-1 (4-344-01496-0) | 2008 | " |