Honestly at first, I was a bit skeptical because the plot summary makes the show sound a bit bland. But it was a lot different from the mystery genre I'm used to that includes a murder, and they try to figure out who did it etc. This one is very different and then the ending is very conclusive, although we never figure out why or how they got into the time loop.

For story: Like I said, it is very creative in how they tell a mystery using a time loop. It might sound repetitive, but every loop is a little bit different from the last when they get more information to figure out how to fix the time loop. It also involves a lot of perspective on the accused side of how they deal with things and process sticky situations. As for romance, it's a little slow but there are some bite-sized romance stuffed in there, and it's not overly dramatic/cheesy.

Acting: AMAZING!! The actors definitely know what they're doing and they portray every emotion and personality perfectly. I comment on the acting a lot for the episode reviews lol.

OST: I don't know why but I especially love the ending song because it kind of fits with the main characters' relationship but also the other relationship too (that you'll see if you watch this). The singer also did a phenomenal job of singing the emotions of the song.

Rewatch: Usually, I don't rewatch things unless they're really good but for mysteries I like to watch them again to see the little details I didn't catch the first time because I know what happens.
TL;DR Amazing show with a spin on the mystery genre with slow but sweet build-up of romance and the ending has good closure on all the characters that leaves a little bittersweet feeling when you watch a good show.