Anthology Volume 1

Volume 1 (お兄ちゃんはおしまい！ 公式アンソロジーコミック, Oniichan wa Oshimai! Kōshiki Ansorojīkomikku) is the first volume of the Onimai: I'm Now Your Sister! anthology series. It was originally released on May 27, 2021.

Trivia

 * This volume has not recieved an official English language release.

同人集第一卷