Collected Works Volume 3

Volume 3 (お兄ちゃんはおしまい!⑦⑧⑨, Onii-chan wa Oshimai!⑦⑧⑨) is the third collected works volume of Onimai: I'm Now Your Sister!. It is a compilation of Volume 7, Volume 8, and Volume 9 of the doujinshi with added bonus material. It was originally distributed at Air Comiket 2 on December 30, 2020 before receiving a general release on November 3, 2021.

Bonus Material

 * Character Profiles: Asahi Ōka, Miyo Murosaki, Nodoka Fushima, Nemu Fujimi, Yuta Sakurada, Minato Senkawa, Satsuki Tadaka, Minori Shiina, Akira Nakai, Miaso Nogota, Aoi Tachikawa, Mari Nishinomiya, Yuriko Kitahara, Rin Minakata.
 * Bonus Sketch: Mahiro in her school uniform
 * Afterword

Trivia

 * The English language release of the four parts of Chapter 21.5 classifies them instead as special chapters.
 * The English language release of the two parts of Chapter 24.5 classifies them instead as bonus chapters.