2020 Summer Special Brochure

The 2020 Summer Special Brochure (2020夏の特製リーフレット, 2020 Natsu No Tokusei Rīfuretto) is a special chapter of Onimai: I'm Now Your Sister!. It was originally published in Collected Works Volume 5 which was released on August 31, 2022.

Summary
An in depth look at the main characters of the series.

Characters

 * Mahiro Oyama
 * Mihari Oyama
 * Kaede Hozuki
 * Momiji Hozuki
 * Asahi Ōka
 * Miyo Murosaki
 * Nayuta Tenkawa
 * Mai Yasaka
 * Miyako Nagase