We never learn 13.

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!

Asumi Kominami is retaking her college entrance exam so that she can one day become a doctor. As a child, she always dreamed of taking over her family’s practice, but her father is finding it harder and harder to compete against the bigger hospitals. Will Asumi give up on her childhood dream?