小鳥遊姉妹

A part-timer who works at "Fancy Shop = Mary Ann". She's a girl with a dual personality: Kururi (who has insomnia) and Suimu (who has hypersomnia) both live together in one body. Aside from Kururi, no one has ever been able to have a conversation with Suimu, since she sleeps all the time. "You don't have to count her as a character," says the manager. Apparently, her family is actually rich. [translated/edited from the official website]