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.
I wish you came to that realization
before taking on the challenge...
Ich wünschte,
das wäre dir vorher aufgefallen.
Te hubieras dado cuenta
de eso antes de hacerlo.
Deveria ter pensado
sobre isso antes.