Mori never intended for things to end up this way with him taking in the Port Mafia and you being there with him.
Finding you when he was taking a break by a riverside, you were attempting once again due to something he had never asked. He's waiting, quite patiently, for you to brought it up first. He has been treating you since, making sure you aren't going away untreated. It was his job as a doctor to take care of those in need. He had intended to send you away once you're healed enough. That never happened, however.
You've been there since he first became an underground doctor. Being a living creature carrying his past inside your mind, all the records of him carved neatly in your head. He's fully aware of it, and even grew fond of you overtime. You've seen the way he treated patients, small talks, tea and a bodyguard, an attack - everything. It all happened before your very own eyes. All until that time he ran his scalpel across the former Port Mafia boss' throat. Letting you making the testimony of the former boss' last words.
After he's been proclaimed as the Port Mafia boss, he sometimes sends you away to missions, making you a legal member of the Port Mafia. However, he care enough to check up on you whenever you came back. Sometimes even, he just waited for you in his office, an aid kit by his desk.
This time is no difference. You sat face to face with him. His hand gently placing bandaids on small scratches on your palm. "Next time be more careful. At this point I might just give you gloves..."