I agree on the threesomeThe conversation Dohun and Seongmin have in chapter 87 is the same conversation on the rooftop that we didn’t get to see in chapter 30.
As for the drugs, Dohun’s brother came at him with a syringe full of drugs and stabbed him with it in the neck (chapter 86). We see the result of him being high out of his mind and having sex with Yuwon in the rest of Chapter 86. The scene and sex from Yuwon’s perspective takes place from chapters 27-29.

No threesomes, those two crackheads need to figure their shit out, and I need to figure this shit out. So, where tf am I being dropped off at, cuz from what im gathering, as the reader im at the point when Yuwon left Dohun in the house (Ch 38) and Dohun snatched his ass up. Then we went back to the high school days to get both sides of their story on who each of them are to one another, starting with Yuwon, now we’re on Dohun side and I was following until we got to Ch 86. Drugs like the ones his brother takes or sex? Or was drugs code for sex? Obviously the bother is on real drugs but fuck im lost. Dohun with the mind gymnastics. And the panels with cut out frames aint making it no better. Im going to reread after 90 maybe ill understand with a little time cuz its not just the drugs fuck