Keiki Kiryu is a kind-hearted high school student surrounded by attractive girls. One day, he finds a love letter with no sender information, other than a pair of panties. Keiki begins his investigation by speaking to his senpai, Sayuki.
Well, um... I couldn't sleep last night...
Na ja … ich konnte gestern
nicht einschlafen …
Bueno… No pude dormir anoche.
Não consegui dormir essa noite.