SPOILERS!!!!
In chapter 15/16 Cirrus gets Skylar to pretend to be his boyfriend to piss his stepmother off. But she isn't buying it, so in order to prove it Cirrus suddenly grabs Skylar and kisses him without his consent, which shocks Skylar. The kiss lasts quite a long time and Skylar low-key kisses Cirrus back as there's tongue involved (and Skylar is also blushing). When they break apart his stepmother storms off in a rage and Cirrus starts laughing about how hilarious her reaction was. At this point Skylar starts having some sort of panic attack. The kiss brought back some memories from his past (in middle school I think). We see a flashback of him in a classroom, blindfolded and another boy is kissing him. I'm not sure if it was entirely consensual. After the flashback Skylar starts crying and throwing up. Cirrus is offended and tells Skylar he doesn't have some kind of disease. After that they go their separate ways.
That night Skylar has a nightmare about the incident in the classroom. He starts throwing up again in the toilet and wakes his sister. He begs her not to tell their mother about what happened. Skylar keeps thinking about the dream and his kiss with Cirrus. He gets so worked up that he chews his lip until it bleeds. At school the next day he is so tired he falls asleep during his midterm exams.
The next day the teacher calls Skylar to the teacher's office to give him shit over failing his exam. Skylar is devasted. Afterwards he goes to PE class where the teacher asks Cirrus to explain the rules of badminton to Skylar as he arrived late to class. Skylar fantasies about smashing Cirrus' over the head repeatedly with the bat (lol). Cirrus tries to talk to Skylar but he ignores him and asks the teacher if he can be excused as he feels sick. Cirrus goes after him. He assumes Skylar is acting weird because it was his first kiss, so he tells him not to take it so seriously as it was just a joke and didn't mean anything. Skylar snaps and punches Cirrus in the face.
The two of them argue back and forth, then Skylar punches Cirrus in the stomach. After this Cirrus grabs Skylar and is about to hit back when he notices two girls walking down the stairs. They stop and ask if the boys are fighting. Cirrus pretends like they were just messing around and starts to leave but stops when Skylar asks him why he is so concerned with what people think of him and protecting his image / reputation or whatever. Cirrus turns, grabs Skylar and almost kisses him again but Skylar freaks out and pushes him away.
Afterwards Cirrus meets up with Chan-il and his other friends. They go for food but Cirrus can't eat. He keeps starring at Chan-il and wonders what Skylar likes about him. He imagines how differently Skylar would have reacted if it had been Chan'il who kissed him and the thought seems to irratate him.
In chapter 21 the class are going on their school trip. Skylar is angry when he finds out that Cirrus changed the group names before handing it in and is now part of Group 6 instead - Skylar's group. Cirrus thinks about how he originally did it because he thought it would be funny to mess with Skylar, but now he seems to genuinely want to use it as a opportunity to get back on good terms with Skylar. When they are going into the hotel room Cirrus offers to help Skylar with his luggage but he refuses his help. In the room Cirrus keeps trying to make conversation but Skylar tells him to leave and go back to the group he was originally supposed to be with.
Back at Skylar's home his mum is cleaning his room while he is gone and finds his recent exam results...
That's pretty much everything so far. The Korean version of this series is on hiatus at the moment until the end of May so it will be awhile before we find out what happens next. Enjoy!
Any spoiler ? Plz tell me somebody that seme's stepmother will die soon ╥﹏╥ ╥﹏╥