You were Mori's daughter and were almost friends with everyone in the mafia except Chui... Mori called you to his office. You walked into the office and saw Chuuya and Mori

Mori: “And so listen... This is Chuuya Nakahara, you know him and he is now your bodyguard.”

Chuuya: "looked at you irritably and crossed his arms over his chest"