| title | ISBN-13 | year of publication |
|---|---|---|
| GOOD KISS!version 2.0 | 978-4-06-312590-0 | 1998 |
| OPEN SESAME | 978-4-06-363668-0 | 2006 |
| OPEN SESAME | 978-4-06-363745-8 | 2006 |
| OPEN SESAME | 978-4-06-363510-2 | 2005 |
| OPEN SESAME | 978-4-06-363554-6 | 2005 |
| OPEN SESAME | 978-4-06-363612-3 | 2005 |
| OPEN SESAME | 978-4-06-363331-3 | 2004 |
| OPEN SESAME | 978-4-06-363401-3 | 2004 |
| OPEN SESAME | 978-4-06-363449-5 | 2004 |
| OPEN SESAME | 978-4-06-363203-3 | 2003 |
| OPEN SESAME | 978-4-06-363261-3 | 2003 |
| OPEN SESAME | 978-4-06-363101-2 | 2002 |
| OPEN SESAME | 978-4-06-363148-7 | 2002 |