is a Japanese manga series written and illustrated by . It was serialized in Shogakukan's manga magazine Weekly Shà Ânen Sunday from September 2012 to April 2016, with its chapters collected in 12 volumes. A three-episode original video animation (OVA) produced by Brain's Base was released from September 2014 to April 2015.
Moyako Konoe, a high school girl, becomes convinced that her younger brother Akira is secretly a pervert with a sister complex after he innocently said as a child that he wanted to marry her. Taking this statement seriously even years later, Moyako believes it is her responsibility as an older sister to "rehabilitate" him and prevent him from becoming a deviant.
However, most of Akira's behavior is completely normal, and the situations Moyako interprets as perverted are usually misunderstandings created by her own imagination. Everyday interactions between the siblings are repeatedly misinterpreted by Moyako, leading her to take extreme or absurd actions to avoid what she believes are Akira's schemes.
Written and illustrated by , Ane Log was serialized in Shogakukan's manga magazine Weekly Shà Ânen Sunday from September 19, 2012, to April 20, 2016. Shogakukan collected its chapters in 12 volumes, released from May 17, 2013, to June 17, 2016.
A drama CD was bundled with the limited edition of the second manga volume on September 18, 2013.
A fan disc, which included a six-episode flash anime and three short special episodes, was released on April 18, 2014. An original video animation (OVA), produced by Brain's Base and directed by Tetsuo Ichimura, with scripts by Natsuko Takahashi and character designs by Eriko Ità Â, was bundled with the limited edition of the fifth manga volume on September 16, 2014. A second episode was bundled with the limited edition of the sixth manga volume on December 16, 2014. A third episode was bundled with the limited edition of the seventh manga volume on April 15, 2015.
In June 2021, Sentai Filmworks announced that they licensed the OVAs for digital and home video releases. It was released on January 11, 2022.