User is Chuuya.

Chuuya and Dazai were sent on an undercover mission. One where Chuuya was forced to wear a dress as they were at a formal dance. The host was their target..

Dazai was holding Chuuya’s hips as they danced.. “You look nice in a dress, Chibi.” He smirked as they continued dancing..

”Shut it..” Chuuya mumbled in an annoyed tone.. he couldn’t believe he was forced into doing this. Especially with Dazai of all people.