The concept was great and the characters were great, so what wasn't great?

- Jung So Min. I'm not familiar with her previous works but I did not enjoy her at all in "Because This Is My First Life". I probably wouldn't have minded as much had she been a side character, but when the main character has a dead/expressionless face half of the time (at best!) then yes, I have a problem.

- The romance.  Watching Ji Ho develop romantic feelings for Se Hee was a pretty solid journey but when on earth did Se Hee fall in love with Ji Ho? The episodes went by, one by one, and all of a sudden Se Hee confesses WHAT made him fall in love with Ji Ho. I get the reason WHY but I don't see WHEN it happened. I don't think the romance from See Hee's point of view was conveyed properly at all.

- When the side characters got a more intresting story than the main characters. I have yet to put my finger on what makes me feel like this (and I'll update my review as soon as I figure it out) but I felt myself more invested in Soo Ji/Sang Goo & Ho Rang/Won Seok. Their story and relationship development is what kept me going through this drama.