Senpai's Way of Looking

Kouhei, a second-year high school student, accidentally discovers that his older brother's friend and senior, Ayumu, has a crush on his brother, Harumi. Ayumu's beautiful appearance had given Kouhei a cool and intimidating impression, but when Ayumu tearfully begs him not to tell his brother about his feelings, Kouhei finds himself strangely thrilled. As his brother develops feelings for someone else, their relationship changes from that of just senior and junior...