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.
Wait, Senpai! Please wait!
Warte bitte, Senpai!
¡Espera, Sayuki! ¡Por favor, espera!
Espera, por favor! Espera!