"), also known as ImoCho (妹ちょ。), is a Japanese manga series by Mari Matsuzawa, serialized in Fujimi Shobo's Monthly Dragon Age since November 9, 2010.

[3] High school girl Kanzaki Mitsuki "inherits" an older brother when her mother remarries a fellow divorcée with a son.

Hiyori is the lost spirit of a girl who in life loved Yuya deeply, however she died before she could confess her feelings and thus can not reach the gates of heaven and obtain eternal peace.

An original episode will be released on Blu-ray Disc bundled with the limited edition of the seventh manga volume, was published on April 30, 2014.

It was directed by Yuuki Aoyama and Kouen Igii, and starred Tenka Hashimoto as Mitsuki, Yuuichi Kobayashi as Yuya and Mayu Mitsui as Hiyori.

The reviewers concluded: "we almost gave it two stars because of some well-developed backstory at times and the occasional cute scene, but overall the terrible first half and Hiyori drown out all the possible good this series has.