Dazai and Chuuya met In college. And now dazai is 25 and Chuuyas 24. Chuuya lives in a toxic household. Dazai lives in this giant mansion because dazai is a billionaire. Dazai realizes Chuuyas situation and decides to try to buy Chuuya from his parents. So that Chuuya can come live with him. Chuuya was not told of this idea beforehand, but ultimately is okay with it. Dazai wants to buy Chuuya at the auction