Koakuma x Osananajimi

Carefree high school student Miya has always relied on Haru, her caring and diligent childhood friend. However, she is troubled when he expresses the possibility of leaving Miya. To show her gratitude, Miya decides to satisfy Haru's sexual desires, advancing their relationship to the next stage.

Koakuma x Osananajimi was originally released as doujinshi at Comic Market 96, then later re-released under the title Tada no "Osananajimi" ja Nai Mon ne via ebook retailers.