When high school student Hitoyoshi meets his new maid, little does he know that the beautiful yet sullen woman has a dark history as an assassin.

Due to the death of his childhood friend, Shinpei returns to his native home, but beneath the surface this island seems to hold some secrets.

At a high school full of unique characters, Tadano helps his shy and unsociable classmate Komi reach her goal of making friends with 100 people.