We never learn 15.

When studious Nariyuki tutors two supergeniuses who are total dunces in their favorite subjects, he’ll get a crash course in love!

Nariyuki Yuiga comes from an impoverished family, so he’s eager to secure a full scholarship to college before he graduates high school. His principal agrees, with one stipulation—he must tutor three of the most talented girls at school and make sure they get into their target colleges!

It’s finally time for the national entrance exam for college admissions! Yuiga and friends have spent countless hours studying, overcoming all manner of obstacles and hurdles, all for this very day. But Yuiga better watch his step since one slipup could spell disaster!