The drama has a lot of great ideas but no coherent plot. At the beginning, there are enough interesting moments to keep me interested, but they quickly fizzle out into a boring and draggy marathon of underdeveloped plot lines.

Han Se Gye is dynamic and quirky to Seo Do Jae's low-key frozen face. But, Do Jae never grows on me. He is a carbon copy of Nam Se Hui from "Because This Is My First Life" with zero charm and personality. Their unique conditions could've played a big part in their character and relationship growth. Instead, Se Gye's face change devolves into a series of anticlimactic mini-arcs and the rest of their interactions is boring and pointless banter.

When it comes to the plot, it's a number of half-assed story lines with extremely easy resolutions. The face-swap is interesting for about five minute until it is reduced to a few mini-arcs that have no impact on the story and character development. The so-called "villains" are passive-aggressive, semi-infantile jerks who are obnoxious for the sake of being obnoxious with no depth or purpose, and, they are dealt with fairly quickly without creating any actual tension. Se Gye's identity crisis becomes an afterthought, devoid of any substance, as the writers choose a safer route with light-hearted comedy and regularly used cliches. What's worse, the mystery behind her condition is never explained.

Secondary characters are shallow and forgettable. I ended up skipping most scenes with Sa-ra and Ryu Eun Ho. They weren't interesting enough to keep my attention as I already struggled with the drama's draggy plot.

Overall, the show is a lot of missed opportunities to create a compelling love story between two odd people with unique issues. The drama is riddled with repetitive moments, overuse of flashbacks, and cheesy dialogue. Serious elements, that made the drama interesting, are reduced to comedy or abandoned altogether. This was a one-time watch for me.