FTKD-039 - Real-life version of Ryoko, a former classmate who loves it rough

Ryoko, a former classmate and friends-with-benefits partner, takes a job as a housekeeper at Kenji's house while his wife is away. Things get out of hand when she ends up getting involved with not just Kenji, but his three sons as well. An intense, explicit situation where she's passed around and pushed to her limits.