Bandai Channel
A 12-episode anime television series adaptation produced by AIC Classic and Aniplex aired in Japan between January 13 and March 31, 2011 on Fuji TV's Noitamina programming block. Crunchyroll simulcasted the anime on their streaming website. However, it was removed from Crunchyroll on April 21, 2021. Aniplex released the anime on six Blu-ray and DVD compilation volumes in Japan between April 27 and September 21, 2011. Of the 11 episodes to be aired on TV, episodes 10 and 11 were edited into a single episode, and were released individually on their respective BD/DVD volumes. Following the arrest of Ai Takabe, the voice actress who played Maiko, for drug possession in October 2015, Bandai Channel removed the series from its streaming catalog. The anime adapts the story from the point where the characters enter junior high school.