Mihari's Research Lab

Mihari's Research Lab (みはりの研究室, Mihari No Kenkyūshitsu) is a special chapter of Onimai: I'm Now Your Sister!. It was originally published exclusively in the Good Night Onii-chan! doujinshi included with the special edition of Tankōbon Volume 7 which released on January 31, 2023.

Summary
Mihari has fun with her labmates at the University.

Characters

 * Mihari Oyama
 * Asahi Ōka
 * Nayuta Tenkawa
 * Chitose Azuma
 * Arika Tachimi
 * Tsubasa Inui
 * Yuya Ōka

Trivia

 * First appearances of Arika Tachimi and Tsubasa Inui, though their last names aren't mentioned.
 * First mentioning of Yuya Ōka's first name.