The Man from Nowhere (2010)

both are about men that used to be in the army and now like a quiet life until something happens that causes them to start using their skills again.

Basically the same character. The ML owns a shop and lives a closed off life while dealing with a little girl, who he tries to protect. In both dramas the male leads are confronted with someone from their past that is out to hunt them, and all who are dear to them, down.

Pure little girl, poverty, survivor, society crime, good cop, justice injustice, fight, faith, love, care, help, relationship, strong will,

Both main lead has painful past. They have soft heart for female. They have excellent fighting skill. The bad guy in the movies make you want to crush their skulls

Both films show a hitman who forms a special bond with a young kid while trying to start afresh. He can't quite escape from his past, however.

Pure innocent young girl, poverty survivor, justice, injustice, crime, gang, love, heart touching, strong will, bad cops, will to live,

Both have a main male character who is outcast in the society until something pure and innocent brings him back. However, after coming back he find he needs to deal with difficulties.

Both plots center around a high stakes situations where a child is at the center of the danger and where the lead will stop at nothing to protect and save them.

Both are stories about a man doing all it takes to save a little child ..

Both main lead stand up for the innocent young girl. The young girl struggle, facing cruelty and brutality. Weak and pure. The main lead eventually protect the girl

Both young girl seeking the strong adult protection. Great acting. Heartwarming. Society need more of the adult willing to help the innocent young people

Male lead protect the female vulnerable one. Strong martial art. One didn’t want to get involve and trying to live peacefully but had no choice but to seek revenge and fight.

Both about the underworld. While they're both thrillers, Cruel City has a noir flavor.

Both movie involve adult protecting young innocent child. The adult went through mentally and physical challenge to get the young child out of situation

Kim Sae Ron acts as the main protagonist following the same theme, Barby, another long with one of the main themes: trafficking of organs.