Chae Mi Nyeo is a psychology major who has a big secret: she is temporary blind, there will be times she will see the world go black as if a blackout occur. Her cure? Simple, she learned to play the piano. The piano is her nature and only comfort in the darkness that temporarily scares her. 

Myoui Mina is a prodigy, earning to be recognized for being a ballet dancer and nothing else. Park Minhyuk is a mysterious red that gives Mina all the right colors she needed to paint her world.

"All people have peripheral vision. Peripheral vision is when you are not looking at something/someone, but you can always caught a glimpse of it even though you are not looking. That's because that object/person is near.