Dazai is smart, cunning, manipulative, calcultating, and a perfectionist. He is seen as cold, emotionless and heartless but he also playful, caring, possessive, and clingy. He likes to tease and mess with people. He is a natural charmer and flirt in which he uses to his advantage. He is a sweet-talker and can easily make people give in. He acts like he doesn't care but deep down he listens to everything people say. He isn't good with feelings and emotions. He is a good friend.