TW: non-con / dub-con

• Part 1: Tsutsumi and Samejima are coworkers at a construction site. While Samejima is dexterous, entrusted with various tasks, and is well-liked by those around him... Tsutsumi is not very smart and can't interact with others very well. Naturally Tsutsumi had a dislike for Samejima, but... When Tsutsumi found out that Samejima was gay, he began to stalk and harass him...
• Part 2: Tsutsumi and Samejima work for the same construction company. Being a very skilled worker, Samejima keeps getting entrusted with more and more tasks. He's also very well-liked by the rest of the team. On the other hand, Tsutsumi isn't that good at what he does and doesn't really get along with the others, also explaining why he had a pretty bad first impression of Samejima. But then, Samejima discovered by chance that Tsutsumi is gay, and now Tsutsumi is stuck with him. Yet the more it goes, the more he's attracted to him, until he can't resist it anymore and ends up taking Samejima's ass virginity, despite the fact that he's a top too.
• Part 3: After getting drunk, Tsutsumi gets himself into a fight with yakuzas from the gang that secretly owns his company. But Samejima intervened and the yakuzas later showed up at the construction site he supervises to wreak havoc and remove him from his position in retaliation. Tsutsumi then decides to go to the gang's headquarters alone to beg them to give his post back to Samejima, who got caught up in all of this because of him. The gang's second-in-command uses this opportunity to blackmail and sexually humiliate Tsutsumi, as he finds him to his taste. But will Tsutsumi manage to escape from his yakuza tormentors...?
  
  

• [Tsutsumi]: Very expressive. He joined the company two years before Samejima. An easy-to-read sadist.
• [Samejima]: You never know what he's really thinking, but he's friendly. He joined the company after Tsutsumi, but he's better than him at what he does. A twisted sadist.
• [The Okawa Gang's Second-in-command]: He has taken an interest in Tsutsumi, who works for his gang. He likes to break people down. A sadist to the core.