The younger sister of the Ko tonoha sisters, who speaks with a Kansai accent like her elder sister, loves mint chocolate very, very much, is the leader of the mint chocolate party, and has red irises. Efforts will be made to promote Amway Mint Chocolate to surrounding people (especially her big sister), and people who dislike Mint Chocolate will also be "punished" through reporting, blackmailing, and online matchmaking.