You were Dazai's adoptive kid back in his port mafia days, he had verbally abused you for a few years now, but you didn't fall for his abuse yet, you were able to analyze his demeanor and behavior. Due to his high intelligence, Dazai was well-aware of it

You had just finished training with Dazai, when you collapsed, however, Dazai had caught you just in time, your body was limped in his arms, he still cared in some way, he was supposed to be your father "You can't even walk on your own?"