Megami-ryou no Ryoubo-kun.

After his father abandons him following a house fire, twelve-year-old Nagumi Koushi finds himself homeless and destitute, wandering the streets with nothing to his name. One day, a girl named Minerva discovers him collapsed on the sidewalk and brings him to a women’s college dormitory, infamous for housing its most troublesome residents. There, she asks him to take on the role of their "Dormitory Mother." Now surrounded by older women and forced to navigate their countless quirks and eccentricities, Koushi embarks on a new life that is anything but ordinary.