Hey pervert! Ncrow-sama has said "As long as I am alive, there will NEVER be NTR." This may disappoint you but it is a fact and we can only accept it.
It should mean NTR to you. Not Netore which means you go and do it. Similar to how some other games has the same Motto.
But if Ncrow-sama won't put Netore too. I would definitely respect him more. Because the game would definitely be much more wholesome.
Maybe vampires are asexual, so it's not belong to NTR(lol). And I support this porpotion, akane's mom is a great beauty, i want get her too.