Do-hoon meets up with Seo Ye-Eun at So-mi's workplace (Caffe) to discuss the latter's relationship with her father to furthermore understand her psychology. When Do-hoon gets his answers Ye-Eun tries to leave but he doesn't let her go and punishes her for putting him in a bad situation (That's his actual reason for the meetup). It turns out that she came to the caffe commando as he asked. While they were kissing, Ah-young (So-mi's little sister) happened to be at the caffe with a friend, when she saw Do-hoon, she follows him and takes peeks at him and Ye-Eun kissing. Do-hoon notices people's noise just outside and rushes upstairs to continue humiliating Ye-Eun.
Bumsu calls Do-hoon to do some volunteer work at the church. When the former gets there, he finds his wife chitchatting with Do-hoon and senses that they've gotten closer. He later leaves them alone at the church thinking that his former high school mate wouldn't try to anything funny to his wife. Do-hoon gropes Hyuna and tries to seduce her but she isn't moved at all and leaves him. She goes back to her husband who's been waiting for long in his car, she asks him to take them somewhere nice on the weekend, but he doesn't wanna, and calls her selfish. That was the last nail on the coffin for Hyuna who's fed up with her husband's mistreatment (she recalls a memory where she caught her husband cheating on her). She storms out of his car and returns to the church in tears hoping Do-hoon is still there. When she finds him, she asks him to continue where they left off.
Yuna, who's a TA in the same department as Jinwoo (she's his senior), and also a Pornhwa artist. MC is her only reader as he's an outcast and also a gooner. One day, feeling very sad (because her drafts got rejected) Yuna calls Jinwoo into her office in hopes that he would comfort her, and he doesn't disappoint. She uses sex with Jinwoo as research material for the betterment of her work.
Bora is annoyed that she keeps running into her ex-boyfriend and hates that she still misses him. So, she drags into a motel to fuck all day. Shagging was so good had her forgiving him mid sex. (Post-Breakup sex)
Bora is extremely bitter and obsessed with the idea of breaking apart Yunho & Yoosun. So, she stalks Yunho throughout the whole summer. One day, the in-laws go on an outing together with Hayul too, she stalks them through the entire day. She feels that she wasted her time doing so as nothing suspicious happened during the whole day, but later at night her fears come true as she clearly sees Yunho and Yoosun fucking passionately. She interrupts them and gives them a good scolding & even threatens to snitch.
Yejin is fed up with Yubin coming over to get fucked by Jinhoo and her "innocent and refined act" in the midst of all that as she feels that her "personal cock" is being stolen. One day, she ordered a suspicious pack (it's full of sex toys) and stated that she'll "Bring out the fake bitch's true colors". When Yubin arrived at their place, Yejin welcomed her and gave her a cold drink (it's spiked). After drinking the drink, Yubin fainted and then woke up to find herself tied up to the bed, she asked 'what's going on?' Yejin shamelessly lied to her and told her that Jinhoo is too worn out from fucking the both of them and that they have to give him a little LESBIAN show to get him turned on. Yubin didn't mind if it's for the sake of Jinhoo and then she asked about what she's supposed to do, Yejin told her to just lay back and enjoy getting played with her body. Yejin started her show by shoving a vibrator in her victim's pussy, then she proceeded to bring out her Custom-made Strap-on that is the exact same size as Jinhoo's cock. Before fucking her, she wanted to humiliate her and make her beg for it, so she told her to say: 'Please put that cock in my slutty pussy', as soon as Yubin uttered those words, Yejin started fucking her with the strap-on with Jinwoo watching through the whole show. When Yejin noticed that he's turned on, she invited him to join them, Jinwoo hesitated at first as Yubin's pussy is already preoccupied with the strap-on. Yejin told him to stick in her BUTTHOLE as it' the only free hole, he still hesitated because Yubin never tried anal sex before, the two girls managed to convince him, and then he proceeded to thrust his dick in her asshole. Yubin felt a pleasure like never before as she got fucked in her pussy and had her anal virginity taken simultaneously to make for a mind-blowing double penetration experience, she never had before.