This has been on my watchlist for so long because of Kim Hyeyoon but I didn't want to watch it thinking it's about cheaters based on the comments and reviews I've read. Turned out it wasn't.

I like this well enough but I wouldn't rewatch. It's about two people who became friends despite living 20 years apart because of a HAM radio. Where the friend from the past learned that his friend from the future will not exist if his lovelife succeeded. And so, he chose to be a non-toxic person, sacrificing his love and allowing fate to do what it will to the three people who became close to him.

Right after watching this, I also watched the Kang Hanuel 2000 version which is basically the same story with genders reversed. Though I liked this movie more (the plot twist at the end made me cry) the pacing of the 2000 version was better, with the MC's love story and decision being more fleshed out. The people in the past were well acted. Thanks to Kim Hyeyoon's nuanced acting, I was able to see the Hansol's expectation and interest for Yong (Yeo Jingoo) but there should have been more scenes where she was showed her love after they became official. For the people in the future, they might need a little bit more improvement. Choi Yihyun as Munee and other MC could have been more vibrant as her counterpart in the 2000 version was, played by Yoo Jitae. Frankly, I was a little bored whenever future scenes were shown.