| title | ISBN-13 | year of publication |
|---|---|---|
| bluesky melody | 978-4-87734-666-9 | 2003 |
| Brownie chocolate | 978-4-86252-623-6 | 2009 |
| green herb candy | 978-4-87734-766-6 | 2004 |
| purple agate | 978-4-86252-066-1 | 2006 |
| yellow cherry pie | 978-4-87734-918-9 | 2005 |
| red corolla 初回限定版 red corolla shokaigenteiban | 978-4-86252-269-6 | 2007 |