Chapter 1-2: Naoto is your normal ol' diligent office worker. A married man and father. But one day, he becomes captivated by the allure of his extroverted friend Tomoyuki's huge dick. Unable to shake of the awe and excitement, the two men end up getting down and dirty~ While Naoto is clearly sexually attracted to his friend... he attempts resist his indecent desires by the power of his inner virtue... However, resistance is futile, and he is easily seduced by Tomoyuki! Naoto is shown a whole new world, and enlightened to pleasures he never knew of... Chapter 3-5: A serious married dad gets addicted to relationships outside the home... Naoto met Tomoyuki at his wife's workplace BBQ and had an affair with him. It's been 2 months since then. Even though he knows he's still attracted to Tomoyuki, Naoto has been trying to distance himself out of guilt—but when they meet again, Tomoyuki's provocations make Naoto unable to suppress his desire any longer...! Fucking Tomoyuki, getting his butt groped at work, and finally barebacking on a night out...!