Marco, a boy who admires healers who support warriors and heals all. In order to make his dream come true, he enrolls in a nursing school, "San Castello," which specializes in training healers. However, when he entered the school, it was a world where females were 90% and males only 10%! What fate will fall upon our plucky protagonist is...!? A little naughty struggle featuring the sweat and tears of a shota aiming to be a Healer!!!! Not to mention, contrary to the fun school life he hoped for, this school has various courses which will put his own life at risk!