Momiji's Massive Transformation!

Momiji's Massive Transformation! (もみじちゃん大変身！, Momiji-chan Dai Henshin!) is the thirtieth chapter of the Onimai: I'm Now Your Sister! anthology series. It is written and illustrated by Kaeru Oie. It was originally published as part of Volume 2 of the anthology series on April 27, 2022.

Summary
Mahiro tries to dress Momiji up in a more girlish style, only for her to become enamored by the world of cosplay.

Characters

 * Mahiro Oyama
 * Momiji Hozuki
 * Yuta Sakurada
 * Minato Senkawa

Trivia

 * This chapter is written and illustrated by Kaeru Oie.