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

Both movies display the hardships and homophobia that pursue a homosexual relationship.

Both show a young man being held captive an abused.

Both movies share the theme of a woman being stuck on an island with a bunch of psycho dudes.

Prison films about abuse of power.

Both are about a little girl being abused by her mom and step-dad until someone steps in and takes her away in order to save her.

Both are about a teenage girl contemplating suicide after being singled out and bullied by her classmates.

Both depict a mother and son with a strained relationship that turns incestuous.

Both depict extreme cases of a teenage boy being bullied by his classmates. No one helps or believes them, and even their own mothers abuse them from time to time.

Both depict quiet teenage boys who struggle with loneliness and survival.

Both are about a young boy struggling to survive without parents.

They both have same director. They both deal with love and duty vs honour, and a lower caste samurai being asked to kill someone he is reluctant to.