Possessed (2019)

- Both deal with supernatural elements
- Strong chemistry between the main leads (friendship)
- Mysterious and dark

It's basically the same plot except that The Guest is much better written than Possessed. And it's what people who initially started watching the drama would've hoped to see from the drama before the writer decided to give up on the plot of Possessed.

The Guest is basically the drama that the writer of Possessed would have wished they could replicate in terms of storytelling but failed miserably. In terms of making the antagonist, in this case the main evil spirit/demon, The Guest did it better without making the demon be too overpowered or overly exaggerated. The conclusion of The Guest also was much more satisfying and less depressing than Possessed.

Both involve demons and shamanism. While "possessed" mainly focuses on the relationship of the male lead and female lead "Coming" has very little romance between one of the male and female leads.

(KIND OF A SPOILER BUT NOT REALLY)
- the killer in abyss is reincarnated and continues killing, while in possessed the killer possesses random people and continues the killings

Past in the form a ghost or supernatural events happening in the present. The dynamic of a older detective finding out the truth behind with a younger female lead.

both dramas are from OCN and the posters gave me the same vibe which is why I started both of them xD

Possessed had the best potential for the evil spirit drama, and they both share that same feel.
also they both have a female character that has "special powers" needed to fight the evil spirit

They both have the element of using Ghosts to solve crimes. Possessed is a lot darker though, not as light as this. If you are looking for a darker detective mystery with ghosts, possessed is where it's at. It's funny sometimes but I'm mostly scared out of my life

Both shows focus on a demon controlling (Possessed) or taking the shape of other people (Metamorphosis). The tone of both the movie and the show is bleak and dark; with the end game always revolving around having to make sacrifices in order to win.

Possessed is similar to The Ghost Detective its has those brutal killing, well the spirit and ghost not so much close but it has that in common and great actors with slight romance.

both deal with ghost, however this is about a detective and a woman who does anything in her power to not see any ghosts

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

They both have ghost seeing female leads, there is also a slight romance in both of them, they both also have similar/ the same genres