No Mercy

Revenge plot
although No mercy is much heavier for some of the thematics it dives into, it's also much more explicit

Similarities:
- A strong female lead in an action packed movie taking bloody revenge without minding her own wellbeing.
- Lots of fighting blood and violence

Differences:
- human trafficking and abduction with sexual abuse of the abduckted (read the taggs before watching)
- FL trying to safe the abducted younger sister
- no law enforcement authories involved

Both are revenge plots. Nam Gi Jun in mercy for none was seeking revenge for his dead brother, going from gang members to gang leaders seeking answers to why is brother is dead and who killed him. Killing each one he come across. In Ae in No mercy was seeking revenge for her sister who was kidnapped and had suffered violence and sexual abuse from bullies. In the mission to find her, she went from person to person (people involved) killing each one. Both got their answers at the end and there was lot of fighting in both.

Both a revenge and rescue story with a skilled main character with a hidden/secret past.

Entertaining big families that come close to heart.
The way both dramas deal with family-only dynamics is peaceful.
Full of comedy.
Heart-filling romances.
Double in-law couples.

Both movies have a strong female lead who is good at beating/killing people and has a mysterious past.

Same premise of someone fighting to save a child who has been taken, however in The Man From Nowhere it is his younger neighbor and not a younger sibling.

Both dramas revolve around sisters taking revenge on the bullies and abusers of their younger sibling. Both leads have a very similar personality and both go to extreme length to accomplish their deeds.

A ordinary MC with a mysterious past on the hunt for people that have kidnapped their loved ones, in No mercy's case a sister and Unstopabble his wife. A must watch if you liked either show.

Both about an older sister trying to protect/save their younger sister from a kidnapping.

Description of Manhole:
A serial killer has been terrorizing a neighborhood in Seoul, and in the span of 6 months, 10 people have disappeared without a trace. He uses a manhole to trap his victims. His latest abductee is Soo Jung, a 14-year-old girl, and her older sister Yeon Seo is desperate to find her before time runs out.