All the colors, all the pieces are you

The story is about a painter named Kang-joon who suffers from facial blindness and a singer-songwriter named Ji-eun who is unable to write lyrics. They both have feelings for each other, so Ji-eun invites Kang-joon to her concert, but Kang-joon unable to recognize her due to his illness. Feeling guilty, Kang-joon cuts off contact with Ji-eun.