On my first playthrough, everything surrounding Asterion and the phrase "I want" really hit me. Him slowly allowing himself desire was incredibly emotional.
I'll say Chapter 18 in general is a beautiful clusterfuck, especially in the leadership route*. I believe that's the only route where Nikos and Asterion are online pen pals, however since this was my first route it felt like the intended path. So Chapter 18 with the stupidly gorgeous Seikilos Guitar I, having our first kiss only to interrupted at the end of the scene by the tablet alarm going off with Nikos freaking out and Asterion smugly inviting him into the hotel by giving him impossible directions (I need Nikos reaction to getting those directions), Not-father and son, Argos v. Argos, Hermes, PUNCHING HERMES. It was a clusterfuck in the best way possible. Then it ends with Seikilos Guitar IV, which is a song that you play to lead into the credits at the end of a story, not to close off a chapter. It's exhilarating and the best end to an "update" I've experienced in any VN.
*Oh I just had the fun idea of making my leader an idiot. I don't think anything will top my art MC, who has selective amnesia and has been told repeatedly by "Argos" that he can enter the hotel without permission, yet is confused every single time it has happened lmao MORE THAN SPEEDRUNNER EVEN. That dumbass who wrecked his food to cheer (???) Asterion up. How?