During a three-day workshop, Soo-Ah was on a separated from both of them in other bus, while Sang Hee and Jun-Ho were on the same one. On the bus ride, Jun-Ho noticed everyone was asleep. Seeing Sang Hee in a skirt reminded him of when she was a kid. He looked around to ensure no one was watching and tried to touch her. She woke up, and he gestured for her to be quiet before sliding his hand into her panties to finger her.
Meanwhile, Soo-Ah texted, asking where their bus was because she wanted to switch. While being fingered by Jun-Ho, Sang Hee messaged Soo-Ah back, claiming they were stuck in traffic due to an accident. The bus driver then announced a 30-minute break because of an accident up ahead. Sang Hee and Jun-Ho used this time to go to an isolated area to have sex. He took her in a lustful leg-lock position.
Mi-seong, who had already arrived at the stop, was looking for them and saw them rushing toward a secluded area that wasn't the restroom. She watched them have sex. Jun-Ho then switched to the ekiben (Stand & Carry ) position and creampie her. Afterward, Sang Hee went to the restroom. As she was running, Jun-Ho noticed she was dripping with cum.
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.
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.
Cha Sang Hee