Responses
Yeah... I think only the fiancee and the ex really count as possible love interests since he ain't really interested in the other that way... actually, scratch the ex since I think her currend body is too young for that...
Anyway... it really leaves a vad taste when most people important for a story apart fom mc is the opposite gender... that goes for female mcs too... like, half of them could be male and it would make no difference in the story... it really bummed me that they made his assistant a female crossdressing... that was so unnecessary...

So far..
The women: ex-gf, fiancé, sister of fiancé, not-really-sister, 2 underaged students, half-fairy loli, mercenary, cross-dressing assistant, faculty competitor, ex-classmate/now guard, princess loli. 12 potential love interests. I probably missed a few.
The men: protagonist, a bad knight…dead after 2 chapters, a drunk professor/extra with 2 lines.