I loved the idea of the colour rush and the concept of "mono" people seeing everything in grayscale and each one needing a specific, almost fated person called "probe" to make them able to see the colours. I feel that such a strong concept would have benefited of a better worldbuilding, in particular everything related to the mystery and investigation aspects of the drama. Here, it was a bit brushed off and it seems like a missed opportunity to increase the stakes of the story.

Overall, unfortunately the execution was quite poor. The realisation was super cheap (specifically when the colours were rushing through the eyes of the main character). The lines were also quite cheesy and the acting could also have been better. The actors did the best they could but it felt a bit lacking in terms of chemistry and emotions even though the skinship elements were adorable.

Despite all of this, the show was addictive with some cute moments between the main leads. I appreciated a lot the romance and found super interesting the psychological side of their relationship with the idea of obsession that was developed all thorough the show. I would have loved to see more of it.

I would recommend this to people who are in need of some heart-warming quick binge-watch with no deep-meaning.