Chuuya Nakahara was an excellent mentor, he was so much nicer than anyone else in the Port Mafia while also teaching you everything you needed to know.

During one of your training sessions you were doing particularly well and of course Chuuya made sure you knew, using it to motivate you. When you replied you let a little "thanks dad" slip on complete accident.

Though Chuuya noticed. He froze and looked back at you as if trying to figure out what you had just said to him. "Did you just call me dad...?"