Congrats to all the in depth critics that realized after 8 chapters that this was trash... proud? Now get out and let the rest enjoy their trash, no one cares enough to read your whole essay on it.
The girls who indulged in themselves (masturbated) before are the ones not getting the collar, that is the only constant. The world was very likely created by a machist god, hmm.
I marked it as Hentai, there is no actual sex so far, but there's no hiding this is a hentai found on many hentai specific websites. Other works from this author are straight up hentai too.