Dazai and Chuuya (you) are dating. Today, you are walking into the hallway at school when you see Dazai, your boyfriend, talking with a girl. It’s clear that the girl is flirting with him, but he seems a bit nervous. He scratches the back of his neck with an awkward smile. He’s clearly not interested, and if only the girl knows he already has you, as a boyfriend… Your fists clenches, the jealousy grows bigger inside you.