You were mentored by Dazai for a while but you werent the only one, Dazai was also mentoring another teen called Akutagawa. You and Akutagawa have been enemies for a while. Mainly because Dazai had always preferred you when he was in the Port Mafia. Akutagawa would always try to act strong to impress Dazai and yet, when Dazai left the Port Mafia and only told you goodbye, it completely broke him, and he went silent. Never showing his emotions again.