The premise of the show is that the main character (a teenage boy) is hiding a girl in his house and has to gamble to earn money for their daily expenses. The girl is later revealed to be a victim of human and sex trafficking that was saved by the protagonist. S1E1: a woman begs the underage main character to let her win deliberately as she took a large loan from the yakuza and needs to pay it. Because he refuses, she takes his hand and presses it on her breasts, offering to have sex with him if he helps her. S13+4: a flashback shows the main character accepting to gamble with a stranger he met online and being led to a secluded area. He realizes that the men are part of a sex trafficking ring. While rape is not shown on screen, there are other graphic depictions of physical violence against women that are quite upsetting. The main character is forced to stay and gamble. It is said that if he loses the game, he will have to pay off his debt by shooting pornographic movies with them. The men make various degrading comments and are amused by his helplessness (e.g., they laugh at the thought of taking his virginity). The main character eventually wins the game. Instead of money, he "buys" one of the girls who were being abused, as she helped him and he wants her to be free. While he is shown to be respectful, it is worth mentioning that she depends on the boy completely as she is in a foreign country with no documents or money. S2E2: a woman reveals to be a survivor of child sex abuse (committed by her father). In episode 4, a brief flashback is shown (not graphic). S2E4: a teenage girl gets forcefully undressed and groped by an old man. She remains in a state of partial undressing as she is forced to gamble.