Uuuhhhhhhhhhh...
Well I could have guessed Denji wasn't going to pay attention, but the rest of that chapter was a blur of Denji-horniness and info dump. Insane power for the STD Devil, but it explains a fair bit, both about Fumiko's personality as well as her reappearances after obviously dangerous encounters. So it's entirely anyone's guess at this at which side Denji will take and what the consequences of that will mean...