Why is He absent?

Hitmen Flying Dagger and Wild Dog fall for each other while hiding deadly secrets. When truths surface, love puts them on the run from their own bosses.

Young-eun, a skeptical high school girl, isolates herself from others through elitism, preferring to be alone by choice than being rejected. One day she finds at her usual solitude spot a boy who is alone like her, but for the opposite reason: he cares about how others behave towards him. They walk by the cherry blossoms together.