Mystery, Thriller, married couple and a child… I don’t know why exactly but Flower of Evil reminds me of Kairos in a way. There’s one similarity I can think about but I don’t want to spoil it.
For some reason this drama reminds me of Circle. It is not really about time traveling but it’s sci-fi, and you get to watch different timelines and there’s a futuristic world + police / investigation & an alien.
If you like time travel based kdramas then watch Tomorrow with you. It’s slow paced and sometimes may be a little bit boring but it’s really not bad. The ML is a time traveler trying to save his future self.