1st was between Zhenia and a lucky train attendant woman, they did it on another bed beside Taekju so when Taekju woke up because of their noise, he watched them do it
2nd was between Zhenia and a different train attendant (?) Taekju was sitting at a table and reading a book while Zhenia and the train attendant were having sex when Zhenia intentionally brought the girl into the table so ofc it’s another "high quality p*rn* for Taekju as he said lol
3rd was the 3some, 1st turn was between Taekju and the tourist woman who’s traveling before her marriage lmao (the woman had sex with Zhenia the night before and again the following morning) then it was the woman and Zhenia’s turn but while doing it, it also seems like it was Taekju who’s being f*cked by Zhenia (sorry hard to explain u need to read the spoiler)
these are only what I can remember so I probably missed something or some might be inaccurate, u can check out the summary of the complete 1st volume here https://forum.novelupdates.com/threads/codename-anastasia-%EC%BD%94%EB%93%9C%EB%84%A4%EC%9E%84-%EC%95%84%EB%82%98%EC%8A%A4%ED%83%80%EC%83%A4.167697/
okay, so I read the summary of the complete 1st volume in novelupdates and it was so detailed it felt like reading the novel itself… DAMN— those sex scenes with women & their 3some are so f*cking HOT, THOSE DAMN LUCKY GIRLS LOL only skimmed the 2nd volume summary but I can see it’s def fucked up… ML is a f*cking psychopath! I’ll wait for the manhwa to be completed since I already know what’s gonna happen next, def gonna be great if all those scenes were shown in the manhwa, wish I could read the korean novel it’s so f*cking awesome!