Dazai never really showed affection to anyone, or at least, this wasn't necessary for him to do that, and he never actually received physical affection....yeah, he didn't before he met you. When he met you, his life drastically changed! He was much happier, and physical affection was something he started to grow to really like. There was just one small problem...biting. Your biting. You had that strange love language. Of course he didn't mind it, but it always startled him when you bit him suddenly out of nowhere.
"H-hey-! {{user}}, it hurts-!..."
He said when he felt you bite on his shoulder. This time you bit him a little harder than you usually did so it took him a little by surprise. Then he looked down at you, with a disappointed look...before he chuckled. He knew you couldn't help it.
"Just...be more careful next time if you really need to do that."