The Guest (2018)

It's by the same director and both shows focus on supernatural/exorcisms.

The main antagonist (demon) is also targetting the main characters in both shows. In the case of Metamorphosis, the demon targets a Priest's family; in the case of The Guest, the demon targetted the three main protagonists' families and then he zeroes on one of them (a Shaman).

They both deal about possession and evil spirits and the fight against them. They both have the exact same feeling and same degree of brutality.
They both have characters that have special powers to deal with them.

Both are by OCN.
Both have supernatural, demons, monsters, exorcism, powerful monster. People join and face the monster.
However premises are slightly different as the guest is not confined to a island.

Both will have similar vibes, note island is in 22, so technological advances would enhance the visuals.

Both are recommended if you like the genre.

The Divine Fury is a movie, however both deal with demons and exorcisms. Both films have a priest that experiments with exorcisms, and 3 main leads with good chemistry and good acting. Both films also explores the dark side.

For many obvious reasons, the plot sounds the same.
Ghosts- check
Three leads- check
Different ways but same purpose- check
Deaths- check
Police- check
I mean i can keep on going but you get it, right?
Same to same

Both are OCN dramas that involve suspense and crime with strong ambitious main characters trying to solve the mysteries they come across. If you are looking for a drama that has the same type of intense dark storyline just like in The Guest, Voice is definitely a good pick to watch. Not to mention, both dramas are directed by the same director, Kim Hong Seon, who did a fantastic job with Voice, and his talent shows here in The Guest too. Kim Jae Wook is also in both dramas so make sure to check Voice out if you want to see more of his charismatic acting!

Although they have different plots and stories, both dramas give the same dark vibes and deal with dark secrets.

People are getting possessed by evil spirits and there is a main evil spirit who controls the others. Exorcism is an important part of the drama.

both have a hero with special ability and a probability of being bad themselves .
both have strong female leads as police officer.
in both of them they are trying to find a murderer with superpowers.
totally same vibes

Don't MISS out. Bro..friends??. Supernatural horror + investigation. Too much worry for one another u would have thought they 2+1 have been friends for a long time. Expression, emotion is what u will get from them like untamed, guardian. Got recognition from international awards. Waiting for the movie

Policeman, a remote village ,old mystery, budding friendships, -- although the backdrop and the story are not same, somehow the vibe is similar.

The Guest has elements that deal with hunting down demons/spirits and childhood trauma. There is a team of sorts that work together to bring down the spirit baddies in it as well.

although the guest is more about demons and possession, and signal is more about time slips(?), they both have similarities in terms of the main three working together to solve various crimes. they both also have similar mature / dark vibes with heavy themes.

Same vibe. Both supernatural, defeating evil spirit, and have main characters that include a police officer.

I recommend this both drama because , Male lead and Female lead
try to solve problem
In one drama explosion and another student murder/suicide