Natsuki Takeuchi, a young employee at a small to medium-sized company, secretly has romantic feelings for the older, married manager Sato. Natsuki sees his wife's ass being covered all the time, and approaches the manager saying, ``I don't want to lose to my wife.'' Then, in order to have a better relationship than his wife, he allowed the manager to have "anal sex", which was his fetish, and gradually woke up to the goodness of anal and orgasmed! Deep throating himself, having intimate anal sex at the hotel...I can't stop the anal affair anymore.