| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Ikiterudake de naze warui? | 978-4-8284-1433-1 | 2008 | Rika Kayama |
| Jikan O Tetsugaku Suru: Kako Wa Doko E Itta No Ka | 978-4-06-149293-6 | 1996 | |
| Just alive prescription of happiness promoted by the bad and psychiatrist? Philosopher why ISBN: 4062814676 | 978-4-06-281467-6 | 2012 | Rika Kayama |
| Win aizo: Yoroppa seishin to no kakuto | 978-4-12-100956-2 | 1990 | |
ビジネス社 (bijinesusha/yashiro) · 中央公論新社 (chuuoukouronshinsha) · 講談社 (koudansha)