Leave it to the Koreans for originality. The concept itself, a person who suffers from a type of color blindness but who has a chance to see colors if they meet this one person - their probe, is fascinating and opens up to a variety of plot avenues to explore. Although the idea of destiny is not new in Asian dramas for once this wasn’t about some childhood connection that one or both of them had blocked and which comes to be reveled towards the end of the drama. This alone by itself adds a positive value in my book.
The way the drama portrays the personality traits of Mono’s who for most, if not all, their lives live in a world of gray can meet a Probe and gradually change from being awed at seeing colors for the first time to fearing losing the ability to see colors again to being obsessed and in some cases turning violent, allows the viewers to sympathize with their emotions and at the same time be terrified at the very thought. While watching I kept thinking with a proper fleshed out thorough script this concept could make a very very good dark thriller.

I will tell you, this drama has made me research color blindness and have come to know more about cone and whatnot more than I care for. But the whole concept was fascinating .
The drama starts with Yeon Woo who happens to be a Mono, narrating about his fears that comes with a Mono meeting his Probe and wishing that he never meets one for the rest of his life. But fate laughs at us all, as on his first day at a new school Yeon Woo meets 3 friends one of whom turns out to be his Probe (Yoo Han).

As the drama progresses we see our Mono experience seeing color for the first time and going through the emotional turmoil that comes along with it. The actor did a good job expressing the characters emotions- his excitement and fear.

Unfortunately the strength of the drama just so happens to be its biggest flaw as well. A good plot like this needs to be properly fleshed out and explored. This barely scraped the surface of what it could have been and instead filled the already limited time with flashing light of color rush scenes. Additionally, it spent the 8 episode showing from the perspective of Yeon Woo and at the very end pretty much narrated Yoo Han’s side and closed out the chapter. Yoo Han’s reason for his interest in Yeon Woo is another fascinating concept on its own but the drama never gave us the opportunity to related to it. A character (one of the friends in the drama) is nicknamed “grandpa” and who speaks in a prophetic manner is another interesting underdeveloped character that viewers were not given any background on but expected to accept at face value. Not to mention that there are plot differences from what is in the synopsis and what was filmed. Like the investigative part, aside from mentioning that there is an investigation into Yeon Woo’s mother’s disappearance there is nothing that comes out of it, let alone having these two boys be involved with it. At the end- the feeling I was left with was unsatisfied? Disappointed? Maybe both and more.

Is this a good watch? Yes, but I still feel it fell short from what it could have been.

P.S. these color rush scenes btw should come with a warning for those sensitive with flashing light- nearly triggered my migraine the first time!