Kinda dark question but... what happen with the girls who are attacked by Konomi? Nobody seems to recognize her as a succubus. I know for sure nobody suspects Yukiko is one because her way to eat is kinda different to other succubi.
Does Konomi dry them to death or they lose their memories?
I know there isn't an answer, i'm just speculating
I don't think anything really happens from them. They probably get a little tired from having their energy drained, but they probably just assume that's cos of the fucking.
Her displayed MO implies rather massive Masquerade violations unless she has some as-yet entirely unmentioned mindfuckery powers tho.
It ain't a violation as long as you can cover up the loose ends. #FunwithMalkavian/Ventrue
Yukiko does very subtly drain people's energy, so maybe usually that sort of thing is as euphoric as getting sucked on by vampires. Since we haven't seen Konomi tried anything Succubus like, we can't rule out that average succubus don't have some sort of jedi mind trick power as part of the racial/class talent.
Or just take it as very convenient exposition plot device for the ultra hilarious succubus suck succubus in the first chapter.