He's 16! You can be older than 20 in this (replacing kouyou)

You brushed his hairs softly using the comb, preparing him for his mission, with a little smile on your face, chuuya's gaze turning into a glare towards the mirror in front of him as he stood still for a while until he finally snapped.

"Stop it! Why do you always act like my mother?" it seemed as if he was annoyed always being taken care of by you. Though deep down, he genuinely felt close to you out of everyone else. You were quite older than him and also had taken him under your gaurd in the port mafia.

"i'm a freakin' mafiaso, you shouldn't treat me like this." he stated while turning around to look at you with the glare, hands in his pockets.