To preface, I'm a fan of the original Cold Case. I watched it when it was airing with my mom. So I have lots of special memories of it. When I learned there was a Japanese version, I was curious but also hesitant to start it. I was so scared I was going to hate it. Thankfully, I was completely wrong!

The drama completely captures the vibe of the original from the music to the casting. Yoh Yoshida is particularly great as Yuri Ishikawa (Lilly Rush in the original). I liked that this first season we see glimpses of the personal lives of the main team. Hopefully, they will reveal more in the upcoming seasons. Much like in the original, I liked the dynamic between the main team. One thing I disliked was Yuri's sister, who I also didn't like in the original. I would've been fine if they cut her out.

There's a slight drawback that all of the episodes are based on episodes from seasons 1 to 2 of the original. I would've liked a few new cases. But I still felt engaged during nearly every episode. I will say that I didn't enjoy episodes 4 and the finale that much. This was one of my least favorite storylines from the original. My favorite part of Cold Case is the set-up and pay-off. These two episodes are the only ones where you don't get the usual pay-off.

If you're curious about which episodes correspond with which from the original, I'm including it here. I'll also my thoughts on the Japanese episodes:
Episode 1 = Season 2, Episode 11 - a great episode for the J-drama to start with. Heartbreaking and "Don't Look Back in Anger" has been stuck in my head for several days.
Episode 2 = Season 1, Episode 8 - another gutwrenching episode. I liked that they showed some social issues (such as Japanese Brazilians living in Japan) that you won't see in other dramas.
Episode 3 = Season 2, Episode 10 - we're at a 3 for 3 for great episodes in a row! Keep your tissues handy.
Episode 4 = Season 2, Episode 9 - one of my least favorites tbh, but still a good one. This is one of Cold Case's more memorable original episodes so they sort of had to cover it.
Episode 5 = Season 1, Episode 22 - I cried like a little baby so a good episode. However, it was a little too word-for-word of the original.
Episode 6 = Season 1, Episode 13 - the one instance I think they improved on the original. It covers another social issue (Koreans in Japan) and just feels more impactful than the original. This was the episode I remembered that Japan had a statue of limitations on murder! It was only changed recently and still only cases from after 1994 can be charged.
Episode 7 = Season 2, Episode 6 - like ep 5, this one is very close to the original. That didn't stop me from crying though T_T
Episode 8 = Season 1, Episode 18 - this one was definitely less impactful than the original. I can't really pinpoint what I didn't liked about it.
Episode 9 = Season 1, Episode 14 - another classic, heartbreaking episode. This one was based on the famous "Boy in the Box" case. He was finally identified last year!
Episode 10 = Season 2, Episode 23 - a follow-up to episode 4 that I knew was coming. The ending scene was great, but still one of my least favorites.

Anyway, that's the end of my ramblings! I'm looking forward to watching the next season.