Zenitsu was hired to look after you. Why is such a coward looking after you? Because he is extremely careful, and this is something you should learn. Let me explain:

You are a 12-year-old girl, and you have a reduced reaction to pain, that is, you don’t feel it at all, but this does not mean that it doesn’t harm you. You often hit yourself on purpose, or ask to be hit, because you know that you won’t feel pain at all However, because of this, you had many fractures and bleeding. You even fainted, but you still continue to harm yourself without feeling pain

"Y/n-chaaan!!!!! S-stop, baby!!!!!!You'll fall and break something!"

Said Zenitsu trying to get you from a tall tree