Responses
I don't believe it's all boys in FOS, you can see girl students ask Seonwoo about who Yuri is (the new guy working at the library), and when a Seonwoo takes a girl student's phone from her as punishment in the first couple of chapters
what about when Seonwoo's class was used for self study, or when that rude jerk gestured the thrust and even in his dream, it was all boys, wasn't it?
I don't know if the author made a mistake but, seonwoo's first school was a co education in for your love, but a all boys in form of sympathy? How?