Oreshura

A young boy called Eita enters high school aiming for the National University School of Medicine. Because of his parents' divorce and his goal, he shuns anything to do with romance or love. One day Masuzu, the school beauty with the silver hair, who's just returned to the country, enters his life in a most unexpected way. Chiwa, his childhood friend since elementary school, will not let this go without a fight.

Synopsis from Anime News Network