Sang Hee was absent-minded while Jun-Ho called her a few times. He said he finished cleaning the locker area and asked if she needed help elsewhere. She said she could use the help since she hadn't gotten much done. Jun-Ho noticed her distraction and went to lock the door. When she asked why he was closing it, he came over and grabbed her boobs, saying, "So I can do this." She thought he was acting strangely all day. Internally, she wrestled with her feelings, thinking that if she truly cared about Soo-Ah, she would stop him right there, but she also felt she couldn't live without Jun-Ho anymore.
Jun-Ho remembered a new technique he had learned from Mi-seong and wanted to try it on her to see her reaction. He started performing cunnilingus on her until she orgasmed. He then immediately began to finger her again. She told him to wait, as she had just come and needed time to build up to another orgasm. He started kissing her, and she told him to stop teasing her, saying she needed him inside her. He found this adorable, lifted her leg, and penetrated her in the missionary position before switching to doggy style and creampie her. Throughout the act, she thought they should not be doing this if she cared for Soo-Ah, and that she was such a terrible mother.
Mi-seong went to Sang Hee's office and asked her to assign Jun-Ho to clean their entire building. Sang Hee easily agreed, saying she just needed to swap his building assignments. Mi-seong mentioned that it was cleaning day for their building, so Jun-Ho went over and was frustrated to see it was just as messy as it was a week ago. Mi-seong told him he should come clean every week.
While he was cleaning, Mi-seong was naked on the mezzanine, watching him. She asked if he was done tidying up and told him to come upstairs to the bedroom. He refused, saying he didn't do that kind of thing, but she mentioned to call Sang Hee. He went to her, and she told him to start licking her. He reasoned that learning how to please a woman from her might help him with Sang Hee, so he proceeded, but he did it in a messy and noisy way. Mi-seong bonked him on the head and then gave him proper instructions on how to do it correctly.
Afterward, she asked him to put his cock in her, and they had sex in the missionary position until he creampie her. Feeling close afterward, she suggested they try exhibitionism. They put on bathrobes and went out onto the balcony. Jun-Ho was a little scared that someone might see them.
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.