The Rule of Standing on Tiptoe

A transfer student enters the class of Kousuke, a second-year in high school. Raku is tall and good-looking, the exact opposite of the shrimpy Kousuke, and very popular with the girls. Kousuke was jealous of Raku at first, until Raku comes clean about a certain secret, and asks Kousuke not to tell anyone. Ever since then, Raku seems to have taken a...