While her father is away on a business trip to America for a month, Himari ends up living with her uncle. Living with her kind uncle is perfectly fine, but the only thing that bothers her is the storehouse, which she's been told not to enter. One day, while her uncle is out, Himari sneaks into the storehouse, where she finds a huge amount of SM paraphernalia, including ropes, candles, and whips. "My uncle must be a pervert..." she thinks, just as she is about to leave...