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.
What's your problem anyway?
You've been spaced out all day.
Was war denn los mit dir?
Qual o seu problema?
Ficou distraído o dia todo.