Doujinshi Volume 12

Volume 12 (お兄ちゃんはおしまい!⑫, Onii-chan wa Oshimai!⑫) is the twelfth doujinshi volume of Onimai: I'm Now Your Sister!. It was originally distributed at COMITIA130 on February 9, 2020 before receiving a general release on February 10, 2020.