While cleaning a building, Jun-Ho saw Ha-Rin spill coffee on a doorbell camera. He accidentally rang the bell, and she opened the door, pulling him inside and kissing him. She said she couldn't stop thinking about him and had been holding back, realizing she had deliberately thrown coffee on the doorbell camera to get his attention. He initially rejected her, calling her desperate and saying he was only there to clean, but felt guilty when she got upset and agreed to help her.
He confirmed, "I just need to fuck you?" and she spread herself for him. After a short time, he questioned why she was so desperate when she could have any guy, and she said she wanted him specifically because "the way you do it makes me feel good." Happy with this, he gave her what she wanted, kissing her as he creampie her. Back in the moment, he wondered if she was after something, attributing her enjoyment to his skill as a "sex genius." She began performing oral sex on him again, making him hard, and led him to the bedroom where he repeatedly hit her sensitive spot. He asked why she held back if she was enjoying it, then made her orgasm and creampie her a second time.
He asked why she waited for him instead of hooking up with someone else. She explained that she had terrible taste in men who only wanted to "fuck a hole, not a real girlfriend." She said, "You are different. You are relentlessly trying to find my sweet spot, and when I was close, you went in." He replied, "When doing both, it feels good."
Jun-Ho Kim and Sang Hee Cha found it difficult to talk freely after having sex. While they were cleaning a building, Jun-Ho couldn't stop staring at Sang Hee's body. She noticed, which made her uncomfortable but also aroused. Unable to take it anymore, she confronted him. He asked if she remembered what happened between them and then kissed her. She didn't push him away because she liked it, though she warned that someone could walk in. He was desperate for her, fingered her to orgasm, and then pulled down her pants and penetrated her. Despite thinking she should say no, her body gave in, and she was overwhelmed by pleasure she had never felt before, realizing there was no going back. After he creampie her, they cleaned in silence.
Now, Jun-Ho knew she wouldn't avoid him anymore. Whenever they were alone, he would have sex with her in various places like the cleaning company's meeting room or an empty studio apartment, usually when their colleague Soo-Ah had gone home. Sang Hee would always start by saying no, but he would always convince her to continue. Jun-Ho was happy to finally have a chance with the woman he admired.
After Ha-Rin's ex left, she noticed Jun-Ho watching her. While putting on her leggings, she slipped, but Jun-Ho caught her, preventing her from hitting her head. She ended up in his lap, and he got an erection. She asked if he wanted to have sex with her, as her ex had left her unsatisfied. Jun-Ho apologized, saying he couldn't because he needed to clean and didn't feel right having sex with someone he'd just met.
Ha-Rin pulled down his pants to suck his cock, but he pushed her away, which made her cry and say she wanted to cum. Facing a dilemma, he asked if she couldn't go back on her offer, then had sex with her in standing doggy style and finished inside her. He tried to leave, but she secretly grabbed his phone, unlocked it with his face, and saved her contact information. She told him that many people enjoyed being with her and that she wanted to be with him too. He then gave her his room number before she left.
Jun-Ho fell asleep while drinking with Sang Hee and dreamed she was seducing him. He woke up to find his head in her lap on the sofa, with her also asleep. Believing he was still dreaming, he began sucking her breast, which woke her up. She pretended to be asleep to avoid awkwardness, but he escalated, pulling off her clothes and fingering her. Uncomfortable, she finally asked what he was doing.
He ignored her, licking her pussy until she orgasmed, and then penetrated her despite her protests. She eventually stopped resisting, wrapped her legs around him, and enjoyed it. He finished inside her, though she hadn't wanted that, and then asked for oral sex, which she performed. Ready for another round, he asked if she wanted to stop; she didn't answer, and he took her from behind. The next morning, he remembered having sex with her in her office. He went to the office to apologize, only to find she had fired him via a message.
Chapter 0-Prologue (Technically the 1st Chapter): He was cleaning at Jeong Mi-seon’s house. After that, Mi-seon asked him to come up here, and the lady dominated him. Then they continued to have sex.