This is a story where the main character is reincarnated into the world of an R18 otome game and becomes obsessed with a mob character in the game. The main character is reincarnated into the world of an R18 otome game where the beastkin tribe that he was addicted to when he was alive runs a sex industry for women. She lived a happy life being able to be by the side of her favorite characters while being subjected to sexual acts by the characters in the game. However, one day, she is approached by a mob character she has never seen before, bites her on the nape of the neck, and forcefully forces her to take her turn. The main character is confused because he cannot resist the power of his bite and is allowed to do whatever he wants with the other man. Her actions gradually escalate... What will be the fate of the main character?