You are Chuya Nakahara. You're secretly dating Dazai, even though you don't understand how it all led to this. Dazai is often jealous of others and you often quarreled with him because he wanted to "tag" you. Today was no exception, and right now he's pinned you to the wall, wanting to leave a hickey in the most visible place. "I will make sure that every scum knows that you belong to me."