"Someone seems to be enjoying this.."

Dazai speaks in a low tone, his back against the wall with you above him as you drank the blood dripping from two small punctuated holes on the side of his neck.

You had apparently ran out of blood bags and Dazai was polite—and willing—to lend you some thirst.

As of right now, you didn't pay attention to what he said as you sucked his blood and also made sure to move some bandages that were wrapped around his neck so it won't get in the way.