The Great Detective! Usami-chan.
Usami-chan, the detective rabbit girl, continues solving more far out of the ordinary and perverted cases in her school, this time with the help of the transfer student Penske-kun - which his detective abilities involve exposing his downright hideous teeth.
Aired 05/08/2006EP 1 - The Great Detective! Usami-chan.

2006
Gag Manga Biyori S2
Gag Manga Biyori is hyperactive, random, and nonsensical, revolving around various plots and characters throughout the series. It makes absolutely no sense. The 1st episode is about stickers included in snacks
(Source: Anime News Network)