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.
Welcome home, brother.
Willkommen daheim, Bruderherz!
Bienvenido a casa, hermano.
Bem-vindo de volta, irmão.