Who Are You is the Thai adaption of the original Korean story.
Similar themes of identical twins in situations.

Similar themes of:
Forbidden love
Supernatural creatures
Humans in situations with supernatural beings

Similar themes of forbidden love with parental interference, hope, family life and school life interacting with personal life

Similar themes of other worldly beings and their effects on human existence
Similar themes of love and sacrifice

Similar themes of supernatural existence in the human world and the effects they have on mortal life

Supernatural beings and their interactions with mortals.
Similar themes of love and what other worldly beings do to it.

Similar themes of humans and supernatural beings and love crossing the mortal human existence into other worlds

Similar themes of the afterlife and the supernatural and human realm intersecting.
Similar themes of love and relationships

Similar themes of omnipotent beings, the humans they love, and what they sacrifice/ go through for them

What happens in a former life affects what happens in the present life. Similar stories of love and situations with life.

School 2013 is about friendships and general school life. It's about grades and keeping up with school and life. Not really in the crime drama trope, it has similar themes of friendship and cooperation.

Similar themes of school students in really strange situations. Watch with the lights on, though. THIRteen Terrors is not the teen centric lovey dovey teen drama, but a collection of some really scary, goose bump inducing, cringe worthy stories.