Doujinshi Volume 20 Commemorative Manga

Doujinshi Volume 20 Commemorative Manga (同人誌20巻記念漫画, Dōjinshi 20-kan kinen manga) is a special chapter of Onimai: I'm Now Your Sister. It was originally published exclusively in Volume 20 of the doujinshi on February 20, 2022.

Summary
Mahiro and Mihari celebrate the release of the twentieth volume of the doujinshi and consider what the future holds.

Plot
Mahiro and Mihari are celebrating the release of Doujinshi Volume 20. Mahiro congratulates the release of the volume and the fact that it is now the manga's fifth anniversary. Mihari thanks the audience for their continued readership which has allowed this momentus event to occur.

Mihari remarks to Mahiro that she never imagined that this would turn into a long-running series. Mahiro admits that they've been through so much and that time really does fly.

Thinking how the manga has lasted for five years, Mihari notes that under normal cirtcumstances, if Mahiro was aging at the same rate as the manga, she'd have a splendid body right about now. The two imagine Mahiro with an 18 year-old adult female body which gives her an extremely large bust. The two smile at the thought.

Mahiro then snaps back to her senses and denies that that will ever happen. Mihari just laughs at that statement.

Asahi says that they should aim for 100 volumes as the next milestone. Mahiro says that that's going a bit far, with Momiji pointing out that that'll take another twenty years to get that far.

Characters

 * Mahiro Oyama
 * Mihari Oyama
 * Momiji Hozuki
 * Asahi Ōka

Trivia
第20卷纪念