Sasayaku no wa Sono Yubi

Synopsis

One day Hatsuki was hurt on campus and was helped by Watakabe Tatsuyuki, the most famous idol in school. Hatsuki, being homo, secretly fell in love with Watakabe. However, Watakabe doesn't have any interest in Hatsuki until one day when Hatsuki found out the truth about Watakabe's words: "I killed my little brother". (Source: Manga Updates)