| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| I see! Wonders of the baby was found so far: Baby Science ISBN: 4103324414 | 978-4-10-332441-6 (4-10-332441-4) | 2012 |
| Naruhodo akachangaku: kokomade wakatta akachan no fushigi | 978-4-10-126491-2 (4-10-126491-0) | 2014 |