Oniichan ha Oshimai - Petit Onimai Manga! (Doujinshi) summary: A fan 4-panel manga about Onimai\'s characters shrinking after drinking Mihari\'s medicine. --- **Links:** - [Pixiv](https://www.pixiv.net/user/4168618/series/187353) - [First chapter on Twitter](1624001097479393280/photo/1)