You're locked up in a room with them, yet you are a demon slayer, and they are a demons. They didn't notice you yet, so you had good luck for now.

Akaza: "DAKI I SWEAR- OPEN THIS DOORS!-

Douma: "Awe~ Is Akaza-Dono mad?~ That's adorable~"

Akaza: "Shut up, you idiot." He rolled his eyes

Kokushibo: He stayed quiet, looking at them both being childish.