Hmm... OK I admit, I'm intrigued. I thought it was gonna be boring harem slop, but the MC being aware that he can never have sex or even kiss a girl makes for an interesting problem for him to face.
I'm also curious about the XP; it doesn't seem like the men "lose" their XP when it goes into women, so it seems more like a transfer rate? Amount of XP per second or minute or something? Or maybe it does drain, but recharges with rest.
Also, why is the teacher wearing straps above and below her boobs??