Lol if the Harem in this manga is like this then I don't mind it too much. At least they're not bulldozing on the MC to force him to accept their obsession feelings. I actually dislike Harem as a genre for making the opposite gender hunt the MC like they're a prize & the romance is a competition or game to win for (female harem or male harem, it's the same toxic vibe most of the time).
As long as they don't start to do a rapey vibe on MC too, I'm gonna resume reading this. & at least the MC twin-classmate had changed her vulture abusive ways.