Kawaibara-senpai wa Saotome-kun ga Suki!

Saotome-kun is short and terrible at sports. He thought that studying was his only good point, but at his new high school, his grades are a far cry from stellar. As he is feeling down and thinking he has nothing going for him, the academically brilliant, sporty, elegant, and beautiful "Perfect Student Council President," Kawaihara-senpai, approaches him. Having maintained her position at the top of the grade since she enrolled, she offers to tutor him on one condition: he must wear a sailor uniform while they study.

(Source: Natalie, translated)