To chime in - Personally, I'd prefer them to have a "lot" of content. Even though, I despise both of them. It's how it's portrayed that concerns me somewhat.
I do have hard time seeing what kind of tragic backstory could redeem these two cunts, to be honest. They obviously don't give a shit about any other students getting abused, aside from Akemi caring about Hikari. Akemi says point blank, that she will accuse you of rape if you don't do what she wants, Olivia clearly was the one who betrayed her promise to you and voted for the perverted professor regardless. The point is, even if they turn out not to be as bad later on.. more specifically, WHEN they realize they may not be so untouchable afterall, of course. Which, already seem to be happening with Akemi somewhat indirectly. I still don't have any sympathy towards her though. And regardless, it won't erase what they did and who they were. And personally, if I was in MCs shoes, I would be holding this over them...
forever and ever and ever and ever and ever.
Eh, also I would have preferred to have option to simply hedge my bets, that other girls aren't as stupid and vote for someone else and refuse these two outright. Instead of owing something unknown to them. AND naturally, later on, when they are proven at having been stupid, when they undoubtably voted for professor pervert out of spite, I would naturally hold it over their heads
forever and ever and ever etc 
.
