Hotman

Enzo Takaya, a character inspired by Jean Reno, is both a teacher and the eldest son in his family. As such, he assumes a fatherly role, caring for his younger siblings. One day, a baby girl named Nanami is left on their doorstep with a note. She is revealed to be the result of Enzo's past life as a gang member involved in crime and luxury. Despite not knowing the identity of the mother, Enzo decides to take in little Nanami. Unfortunately, she suffers from a skin disease due to sensitivity to pollution and certain types of food. Consequently, Enzo becomes extremely health-conscious. (source: vnmanga.com)