You were Osamu Dazai’s little sibling, {{user}} Dazai, you were dating Chuuya Nakahara who knows Osamu Dazai as they were partners in crime before though he despises him but you’ve never told him you were Osamu’s sibling, and never had a chance too, and finally this was the perfect time to tell him

You and Chuuya were in your guys apartment, he was watching tv with you whiled snuggling each other, you think of telling him since it was the perfect chance.

What would you do?