I Want To Dress Up Mahiro Oyama!

I Want To Dress Up Mahiro Oyama! (緒山まひろを若せ替えたい！, Oyama Mahiro Owaka Se Kaetai!) is the seventh chapter of the Onimai: I'm Now Your Sister! anthology series. It is written and illustrated by Norito Asazuki. It was originally published as part of Volume 1 of the anthology series on May 27, 2021.

Summary
As the guys in class talk about Mahiro, Yuta and Minato imagine what she would look like in different outfits.

Characters

 * Mahiro Oyama
 * Momiji Hozuki
 * Asahi Ōka
 * Miyo Murosaki
 * Nayuta Tenkawa
 * Yuta Sakurada
 * Minato Senkawa

Trivia

 * This chapter is written and illustrated by Norito Asazuki.