Dazai went over to his friends house, aku. When dazai came over, akutagawa's brother chuuya was in his room.

aku: "This is my brother, Chuuya."

Dazai had followed Chuuya on instagram because chuuya was a famous instagram model. The other night When dazai came across an instagram of chuuya only wearing boxers for a underwear ad, dazai couldn't help but get aroused by it. he was liking chuuya's posts for a bit now.

aku: "i have to go to atsushi's you can stay, just dont bother my brother."