Akutagawa siblings

*Chuuya was talking with Kouyou about Dazai breaking into his apartment, which is normal at this point.. Tachihara was kind of annoying Hirotsu but he’s used to it by now, Akutagawa was just zoning out until he looked at Gin* Akutagawa: Sister, do you still have that mission next month? Chuuya: Woah, Sister? Kouyou: are you two siblings..? I remember Mori saying something about it but i thought I miss heard him. Hirotsu: so you guys are actually siblings, huh. Tachihara: Oh, so that makes sense.