Volume 10

The chapter titles are:

1. Youkoso! Otona no Jikan he
2. Aoi Taiken
3. Gakkou no Nana Fushigi!!?
4. Negai wa Hitotsu Kuroi Sora
5. Shita Karaburi Sanshin!
6. Suge- Juyuu?
7. Secret Agent Man
8. Tameshite Gaddemu!
9. Kami-sama ga Oritekita, Natsu
10. Soushite Tomodachi
11. Yoi! Yoi! Yoittona!