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.