Oneechan no Onegai

Keisuke

Supporting

A chick bought to commemorate a date between Keisuke Yamato and Ami Ninomiya. By the end of the series, it grows into a rooster. The chick was named by Ami's roommate, who wasn't aware of Ami's hated of Yamato family and Keisuke in particular. When writte...

Mizuki

Supporting

Mizuki is a friend of Yukimura who is first introduced in a flashback in volume 11. Her main desire is for her father to not be as protective of herself and her mother; it's strongly hinted that she and Yukimura were falling in love with each other. Yukim...

Taku

Supporting

Taku is a man living near the mountain on which the mushi sometimes gather....

Yumi

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Mizukis Brother

Supporting

Revealed to be a crossdresser, along with Mizuki's father. They suggested the idea of crossdressing to Mizuki, most probably due to Shizuru's remark that she hated all boys when they were still young....

Mizukis Father

Supporting

Revealed to be a crossdresser, the other being Mizuki's brother. They suggested the idea of crossdressing to Mizuki, possibly after Shizuru's remark that she hated all boys when they were young....