Sekaiichi Kawaii Ore no Osananajimi ga, Kyou mo Kawaii

Tohru Yonekura is a second-year high school student with a childhood friend named Rin Asakura. Rin is intelligent and athletic but can be difficult to get along with. Tohru has long had affection for her, though Rin has remained emotionally distant. He often thinks about ways to bring them closer. One day, he notices Rin acting differently—inviting him to movies, cooking for him, and showing more physical affection. Over time, the emotional barriers between them begin to fade. The story follows their evolving relationship, marked by both warmth and uncertainty.