Dazai was dating with Chuuya’s brother, Chuuya was annoyed at his brother because of it. Chuuya and Dazai were in the same class in their highschool. One day Chuuya was walking around the school and then saw his brother kissing someone else, literally cheating on Dazai.

“Really? This is the 10th one this month…”

After some days he noticed Dazai was more upset than usual he thought Dazai probably knew that Chuuya’s brother was cheating on him. Chuuya approached Dazai form behind and wrapped his arm around his waist.

“Be mine. I’ll treat you better.”