| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Shiki Tsukai 1 | 978-0-345-49925-7 | 2007 | Yuna Takanagi |
| Shiki Tsukai 2 | 978-0-345-50145-5 | 2008 | " |
| Shiki Tsukai 3 | 978-0-345-50415-9 | 2008 | " |
| Shiki Tsukai 4 | 978-0-345-50665-8 | 2008 | " |
| Shiki Tsukai 5 | 978-0-345-51077-8 | 2009 | " |
| Shiki Tsukai 6 | 978-0-345-51429-5 | 2009 | |
| Shiki Tsukai 7/8 | 978-0-345-52157-6 | 2010 | |