Su Yu is a somewhat sensitive and mature girl. Because of her parents' work, she has grown used to slowly resolving problems on her own, never troubling or relying on anyone else.
Then, on the first day of school, she met a boy who gradually entered her life, always keeping to the distance she could accept as he slowly became part of her world and her life.
Their relationship developed at a gentle, steady pace, and Su Yu thought they would always stay that way. She just forgot that life doesn't always turn out as beautifully as she imagines. With no other choice, she asked him to break up.
But the boy, who had always known how to keep his distance, changed.
