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Both are thrillers revolving around human cloning manipulated by a mysterious company, with the characters struggling to survive.

Both also have punchy ending songs. ;)

Both revolve around unethical human experimentation carried out by shady doctors and its consequences for the characters, who are then hunted down to keep the truth hidden.

In Labyrinth of Hortensia and the Minotaur, the story involves human cloning, while in Henshin, parts of a killer’s brain are transplanted into an accident victim, causing the killer’s “mind” to gradually take over the victim's mind.

Both also share an eerie, mysterious cinematographic style.

Both revolve around sibling relationships, with the characters getting caught up in a mysterious pharmaceutical conspiracy and being chased. Both also have an eerie, mysterious cinematographic style.

Both are mysterious Japanese thrillers with eerie cinematography, where the male protagonist is searching for a missing sibling while getting caught up in a large conspiracy and taking serious risks.

This is a remake of the famous Chinese drama The Bad Kids. While both share the same premise, this adaptation is much more direct and closer to the original novel. Because of censorship, the Chinese version had to hide the dark truth behind subtle clues and subtext, whereas this version doesn't hold back.

The ending is presented very differently, but is ultimately the same (those who watched the Chinese version will understand).

Both revolve around a person infiltrating a wealthy, seemingly perfect family, and then bad stuff starts to happen to this family.

In both drama, students are forced to play a death game. Eerie and suspensful setting.

In both dramas, a group of children experience trauma in "welfare centers" and grow up carrying the scars into adulthood. Years later, a series of inexplicable murders begins to unfold, forcing them to confront the past they thought they had buried.

Both stories are filled with secrets, deeply hidden, slowly revealed, and always more complex than they seem.

Each drama is masterfully crafted, especially when it comes to plot twists. Just when you think you've identified the culprit, the narrative shifts and turns everything upside down.

If you enjoy dark mysteries with layered characters and psychological depth, these two are excellent companion watches.

They are both thrillers featuring male twins as the main characters.
In both shows, there is a "good" twin and a "bad" twin who fight each other.

Both dramas are stories of revenge related to childhood trauma. In both, the main character is a mastermind and a manipulative person who will use anything to achieve their goals. Both are also very dark.

Same vibe. While the story isn’t exactly the same, it is somewhat similar. Both share very dark tones. In each, the female lead is involved in a "justified" but violent crime as a child, and the male lead is completely devoted to her. Together, they grow together and descend deeper and deeper into committing horrible acts, ultimately destroying themselves completely.

Byakuyako has a very memorable OST, probably one of.the best of the genre.

In both drama, a judge is forced to cover up the truth after his son causes a hit-and-run accident.