So, calling this a sequel is a bit of a stretch. I mean, yes, it technically does take place after the main episodes, but content-wise it's more of a special episode, meant to give the audience some cute fan service and nothing else.

If the original drama had been more satisfying with answering questions and providing closure, I might've been more receptive to something like this, but since I went into this hoping it would add more depth to the story, I was ultimately disappointed.

It sort of has the same issues that the main story did, which is how passive the leads were. The time travel happens and they just accept it, barely asking any questions. We get scene after scene of them going through everyday, domestic tropes, before the time travel problem arises again and forces them apart.

Ultimately, I think people who loved the original series and just want more of the main couple would enjoy this, but don't expect any new substance.