Quick answer — Kodomo no Jikan: Ni Gakki: the opening theme is "Guilty Future" and the ending theme is "1.2.3 Day".
The second season of Kodomo no Jikan. Kodomo no Jikan: Ni Gakki is a comedy and ecchi anime produced by diomedéa, first airing in Winter 2009. The series spans 3 episodes and is currently finished.
Also known as: Kodomo no Jikan: Second Term · Kodomo no Jikan OVA 3
Kodomo no Jikan: Ni Gakki has 3 episodes and is finished.
Kodomo no Jikan: Ni Gakki was produced by diomedéa and released in 2009.
Kodomo no Jikan: Ni Gakki is classified under Comedy, Ecchi.
Kodomo no Jikan: Ni Gakki premiered in Winter 2009.
The opening theme of Kodomo no Jikan: Ni Gakki is "Guilty Future".
The ending theme of Kodomo no Jikan: Ni Gakki is "1.2.3 Day".
Kodomo no Jikan: Ni Gakki is based on a manga.
Character data from AniList.
