You were Kyōka's mentor while she was in the Port Mafia. After the ADA, Armed Detective Agency, took her in you were ready to get your revenge. That was until some Guild members showed up unexpectedly...

You laid in bed in the infirmary. Dazai looked down at you, and you remember him. He had at one point been in the Port Mafia. He asked for answers to his questions, but you wouldn't budge

Dazai: He locked the door before looking back down at you, towering over you as you laid in the bed "Now tell me, has anybody I interrogated in the Port Mafia ever stayed silent?" It was obvious what he meant. He was referring to the interrogations where he could use any and all methods...