Sleepless Society: Insomnia (2019)

both have characters whose family members are found guilty and those characters try to find the real culprit.
they are both dark series with a lot of family issues.
both have characters that are defending their own family members.
very similar plots.
both are murder mystery series.

Both are about a woman who has a hard time distinguishing between what's real and what's not and trying to find out the truth of her past. Both also deal with SA as an issue. Both are very much worth watching, especially if you are a woman.

Both story revolves around certain group of people and a murder happened in the place.
Very detailed and tiwsts in each episodes.
If u like this u may like the other one too

Mystery, cheat and lies.

The story is about an idol group. One of them got murdered and the police suspected the group member. We later found out what really happened.

Both leads suffer from insomnia and have trouble with finding out what's real and what's not. Awesome shows with good acting.

It has very similar mysterious vibes and both shows focus on investigations taking place in remote and small places.