Both movies show men suffering in prison for their political beliefs. Although, National Security is much more graphic.

A prisoner is severely mistreated in both films. Both are based on a true story.

Both films show a guard/warden targeting a prisoner with whom he seems to have a personal vendetta.

Both show a prisoner being severely mistreated by his guards. Both are based on a true story.

Both movies involve corrupt people in positions of power torturing a man into giving a false confession. Both are based on a true story.

Both movies show a lesbian relationship between teacher and student.

-Captivity
-Human Rights

Both movies make certain characters out to look like they could be killers, and we are left guessing if they really are until the very end.

While "I Just Didn't Do It" is about an innocent man spending time in jail, "Half" is about someone who accidentally killed a man while trying to protect their friend. In both films, the male leads have the same timid demeanour, and are both served a cold plate of injustice. "Half" is much more graphic and violent. The atmosphere of injustice is equally prevalent in both films.

Both involve someone who has been kidnapped and heinously abused by a sadistic psycho. Sweet Whip, however, is about a female victim while Sei no Gekiyaku is about a male victim.

Both are chinese language films with a boy who is being bullied at school and at home.

Both movies star Ayano Go as a homosexual character with a sad ending.