Park Sunghoon, a mono (someone who can't see colors except black and white) meets Shim Jaeyoon, who can make Sunghoon's monochromatic world full of colors when he smiles. But what happens if Jaeyoon gets into an accident that will never make him smile again? start: 2/1/21 end: 3/4/21 HIGH RANKINGS ( makes me feel special ^0^) no. 1 in monochrome no. 3 in enhypen no. 10 in color no. 13 in jakehoonAll Rights Reserved