Quoting @cloudandstars from a different comment: "No you don't need to watch Love Playlist to understand it. Dear.M is a spinoff it's just based in the same universe so the plot isn't relevant at all! However you'll probably learn more about characters Park Haneul and Seo Jimin (who is played by Noh Jeong Eui not Kim Sae Ron here) if you watch Love Playlist but it's not crucial"
I agreethe acting was so cringy. Younghoon was ok not the best but Jihoon wasn't so good. Don't get me wrong i…
I honestly don't expect much from idol acting. But when I saw that Lee Ruby (plays Wang Jarim) was an actual actress under Starship, I was let down. I love all of the idols, but the acting was a let-down and the way the characters' personalities were made definitely didn't help :(
"No you don't need to watch Love Playlist to understand it. Dear.M is a spinoff it's just based in the same universe so the plot isn't relevant at all! However you'll probably learn more about characters Park Haneul and Seo Jimin (who is played by Noh Jeong Eui not Kim Sae Ron here) if you watch Love Playlist but it's not crucial"
Maybe you should mark it as a spoiler? I feel like you literally summarized the entire thing.