A fanfiction of the series ONIMAI: I'm now your sister! (お兄ちゃんはおしまい!) Mihari is going out for a day, and Mahiro will be alone in the house. It's August, meaning that it's the summer break. Like usual, Mahiro would spend her time playing games, reading comics, and sleeping. Without Mihari taking care of Mahiro, it would make Mahiro's situation worse. Of course, Mihari doesn't want this, so she set up a plan to counter this while she's out. ONIMAI and its characters used in this fanfiction belongs to Nekotoufu and I do not claim any rights over them.