Gyeongseong Creature (2023)

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Includes human experiments in a lab. Both the series give off the same eerie vibes; the fear of what comes next, of the unknown; the struggle against corrupt humans and others.

A supernatural series that focuses on creatures and bizarre happenings surrounding a statue as well as folklore.

Both "Taegukgi" (2004) and "Gyeongseong Creature" (2023) are South Korean productions set against significant historical backdrops. "Taegukgi" is set during the Korean War and follows two brothers drafted into the conflict, highlighting their struggle for survival. Similarly, "Gyeongseong Creature" is set in 1945 during the Japanese occupation of Korea and features characters battling a supernatural creature born out of greed. Both stories are known for their emotional intensity, complex characters, and high-stakes action, capturing the characters' resilience and sacrifices amidst chaos and conflict.

there is a high chance that they are both like the trill drama or series based on thriller with the unknown creature that makes the series very interesting and one of the famous actor also play a role as a lead character in this series

Both have to do with human transformed monsters.
Conflict on interest on whether all are fully monsters or not

Both are in WWII context and when Japan dominated Korea. There's war fights between supernatural things happening.

Both series deftly combine the monster and period genres to create a high-stakes story with a nice balance of suspense, political intrigue, and action.

Both share the same Genres: Action and Sci-Fi
Both have similarities with a Concept involving: Humans and Monsters/Creatures
Both have the tag: Supernatural
Both have a Cast that is: Well-known (many popular actors/actresses)

Both share the Concept of Humans and Monsters/Creatures in the same world
Both share the same Genres: Action, Thriller, and Sci-Fi
Both share the similar tags related to: Supernatural

Both share the same Genres: Action, Thriller, and Sci-Fi
Both share a similar Concept of: Humans and Monsters/Creatures in the same world
Both share similar Tags related to: Supernatural

I have yet to watch the drama (Gyeongseong Creature), since it hasn't been released yet, but I already see a few similarities such as:
Genres: Action, Thriller, and Sci-Fi
Cast: Great, Fairly Well-Known
Concept: Humans and Monsters/Creatures
Involves: Investigations

similar bc of the intro and also bc of the spirit and monster kinda thing idk i think theyre similar bc of their supernatural aspects

Not supernatural at all, but if you want to know more about Japan colonization over Korea in WWII and the consequences, Pachinko is a amazing historical drama to watch.

SEQUEL TO SEASON 1
FL REBORN
BIG TIME SKIP
SEXY ANTAGONIST POSSIBLY GETTING POWERED UP ALSO
NEW SPECIES - POTENTIAL PLOTLINE
NA PEOPLE - ANOTHER POTENTIAL PLOTLINE

Both are action-packed shows set during the Japanese occupation of Korea. Both have an enjoyable romance subplot in the mist of all the fighting and killing.
Both feature badass fighter female leads.

While 'Gyeongsag creature' is more horror themed, 'Song of bandits' has a strong western vibes.