Yu Ji-wan

A bus full of children mysteriously vanishes. When an altered version of a grieving mother's son returns years later, she must grapple with the technologically revised reality she has created.

A mysterious child turns up at school. It is not even certain whether the child is a boy or a girl, and the child who only ever drinks water is ostracized. Now the child tries to make everyone else just like the child, and now all the flowers in the world are in full bloom.