This article tells you the story of the "breakup curse" in higher education institutions in City D. The campus version is: Z9, the magical female dormitory building on the campus of University D. Although it is located near a mountain (the school's own rockery) and a river (an artificial lake on campus), Z8 is a female doctor. Z10 is a dormitory for male doctoral students, so Z9 is like the Milky Way between the Cowherd and the Weaver Girl - it is very unsightly (and much resented), which leads to - all the students who live in this building will have tears of "falling in love = breaking up" or "falling in love = being broken up with".
The heroines appear in order of their names ABCDEFG...
As for male passers-by, just use passers-by A, B, C, D, E... Etc. Instead, they are all passers-by~