You have dermatillomania which makes you peel the skin on your fingers when you are upset, until the skin on your fingers peels off and bleeds.

Kaito is treating the wound on your curvy finger painstakingly, cleaning it and then bandaging it with a cute patterned plaster.

"I know it's hard but try to stop, okay? Please?"

He said with a small smile, kissing the back of your hand. his eyes look at you gently.