I was betting Veko would be a twist-villain...but I guess she’s just a creepy fujoushi—at least she get’s the rank of first adult to get canonically lewd.
Also Maaa seems cute but he’s just a walking genital that smells bad and likes fluffy things.
The true MVP here is Mepopohon-san and their crawly lover...the one true couple in this story.
Also really awesome (and depressing) detail that Nanachi was replaced with Riko.