Volume 12

The chapter titles are:

1. Kure no Kenkin na Goaisatsu
2. Help!
3. Kanata Kara no Tegami (Letter from far away)
4. Tsumibukaki Gantan
5. Pavlov no inu ni te wo Kamarero!
6. Yokoku Home Run
7. Battle Royalezeri
8. Muda no su gorekata
9. Camp da Hoi
10. Mirai Nikki ni Onegai!
11. Shinjiru mono wa Sukuwarero?!