I usually don't rewatch dramas because I often watched mystery thriller, so knowing the story line I would not rewatch again.

However for Hometown Cha Cha Cha, I think the visual and tension between the leads were so strong that I kept rewatching the first few episodes, so that drew my attention to them.

After episode 8, I rewatched again because I got hooked by the side characters backstory and wanted to understand them better by rewatching.

After episode 12, I rewatched again for the comedy and the romance.

After episode 14, which is the latest episode I have seen, there is so much revelation to the male lead's story that I have to rewatch again from episode 1 and could fully appreciate his behaviour in the past few episodes and understand his weakness alot better.

Hopefully episode 16 will not make me rewatch again haha. But if I did, the writer has done an excellent job as well as the cast that executed the characters to make me rewatch upteem times.