Akako Onigashima

One of the members of the Yamai group. She made her first appearance in Komi 2 and was already added to the "Can I make 100 friends?" list in the bonus of volume 3. She frequently appears as more than a background character but less than a main character, and finally had her first feature episode in Komi 121.

A girl characterized by her always visible fangs and reddish short, wavy hair. She is always smiling and cheerful, and her friendly nature, greeting even Tadano without discrimination, has earned her the top spot in the "Childhood Friend You Wish You Had Ranking." However, according to Yamai, who has known her since elementary school, "She turns into a demon when her stress reaches its maximum." Her methods of stress relief are eating, bathing, sleeping, and going to the batting center. She refers to herself as "atashi."

Her birthday is February 3rd.

Ranked 22nd in the popularity poll.