The first thing to note about this drama is that it will leave you with more questions than answers, almost no answers actually. Luckily the big question of who the killer is was answered, though not well.

The story was very engaging at first, so much that I binge watched half the episodes within a day. I was really enjoying the plot and mystery in the beginning since there was important discoveries. The questions that came up at the beginning didn't bother me because there was ample time to answer them. What I didn't know then, but soon found out, was that these questions would either be given simple answers or never be answered at all. This drama suffered greatly from a dragged out plot and had issues with plot development as a whole.

At first we're given three (or four) possible suspects and time is given to investigate each of them. They're all quickly ruled out though and the hints for who the killer is seem to stop since the first two murders are stopped, or so we thought. It turns out that the murders the main characters spent numerous episodes trying to stop end up happening anyway lol. That part really upset me because it seemed like all the work they did was in vain. The characters themselves are visibly frustrated though, so I appreciated the showcase of their inner turmoil. They did successfully save the third victim later though, but I still don't understand how she was saved but the other two had to die?

The main characters continued their quest for the killer for way too long, and to make matters worse, when the killer was found the explanation of Why he did it just leaves you with an incomplete feeling. I get that he has mommy issues and was targeting women that read because of her, but that's too simple for me personally. The reason for him killing the FL's mother in the future was never even explained. And it turns out that he didn't even kill the ML in the future so essentially he time travelled for no reason lol. I'm just glad this drama didn't leave us with no answer to who the killer was though, so props for that. I appreciated the plot twist since I was genuinely shocked, but I would've rather if someone else was the killer since it would've made more sense.

After all my complaints you might be wondering why I still rated this a seven out of ten, and the simple answer is the characters. I loved all the main characters and the relationships they developed. My favorite character was actually Misook, I appreciated how her characteristics made sense given her tragic backstory. She was a very selfish person, but for good reason. She truly only had herself to depend on since not even her own mother supported her or tried to stop the abuse she went through. The things she did were horrible, but at least the answer to Why she was so selfish made sense. Apart from her, I loved Haejoon, Yoonyoung, Soonae, and Heeseop. Watching Yoonyoung's relationship with her father change for the better as she finally understood why her dad became the man he was in her future hit me very personally. The connection she had with her mother also hit close to home for me and I'm glad her new future with both of them was a happy one. I also enjoyed Haejoon and Yoonyoung's relationship and I don't think it came out of nowhere like most people do. They grew closer as their search for the killer progressed and realized that they cared for one another. I do however wish that the explanation of their son inventing the time travel car made more sense lol.

Overall, I appreciated the drama's ending since it tied things up to some degree, but I still believe the drama is incomplete because of all the questions it leaves me with. This drama is still worth watching though, especially if you enjoy mystery and family reconciliations. You will also cry a lot, which I personally enjoy lol.