“Because I won’t leave you alone.” Due to her lack of words, Chigusa ends up building walls between herself and others. While spending her time alone at school, she meets a rumored beautiful transfer student. That student turns out to be Iroha, the only friend she had as a child, who says he transferred schools just to see her again…?! Iroha is the only one who can easily break through Chigusa’s emotional walls and steadily close the distance between them— A story of obsessive love between a clingy, possessive boy × a introvert girl!