Hanamaru Kindergarten

Hanamaru Kindergarten is a Japanese manga series written and illustrated by Yuto and published by Square Enix. The series follows Anzu, a kindergarten girl who is in love with her teacher and tries to win his affection but always fails. It has been adapted into an anime television series animated by Gainax and broadcast in Japan from January to March 2010.

From Wikipedia, licensed under CC BY-SA 4.0.