A brave party was formed to defeat the boss demon king in a world overrun with monsters. Shirley, a female hero, is hurt by her friends and leaves alone at night. However, she is attacked by monsters and is given an aphrodisiac and faints at the site . It was the Demon King who saved her from being killed... The next day when she woke up, she was in the Demon King's bedroom. For some reason, the demon king said that he's going to end her suffering from aphrodisiacs... and she ends up having sex with the Demon King........