The story follows a grade school teacher named Daisuke Aoki whose main problem is that one of his students, Rin Kokonoe, has a crush on him.
[2] However, some of its content suffered censorship from animated panels, with some obscuring parts of the screen and using sound effects to "bleep" out dialogue in some instances, and others fully suppressing both audio and video.
A second season consisting of four episodes, titled Kodomo no Jikan: Ni Gakki, was released exclusively on DVD between January 21, 2009 and July 24, 2009.
Rin, Kuro, and Mimi spend the day at various shops searching for a birthday present for Aoki and even buy a book of charms.
As a sign of friendship Kuro gives a white hair pin to Shirai and wears a black version herself.
After realizing what she has done, Shirai eventually decides to wear the white hair pin in front of Kuro, making her very happy.