Oh Sehun is in a unique situation, he suffers from both Dissociative Identity Disorder, where he truly feels and thinks he's a child, despite being 21 years old, but also Leukaemia, which endangers his health.

Nobody ever cared about Sehun, both of his parents not even his brother Luhan, but what if somebody he never met before does, and loves him, will he ever be able to love her back?