The Cinderella panties have gone missing, prompting Keiki to step up his investigation. As a first step, he decides to spend a day with Sayuki - on a date, not as her friend or kohai, but as her master.
What are you doing, Keiki-senpai?
Was machst du da, Keiki?
¿Qué estás haciendo, Keiki?
O que está fazendo, Keiki-senpai?