Hmmm... all things considered, Sunao's situation could be much, MUCH worse.
I fully believe the editors have Hamada-sensei at gunpoint so that he puts the "no insertion" box each time he draws an orgy, and like... multiple editors, with high-caliber weapons, Hamada-sensei completely restrained in a metal chair except for his drawing hand, and sedated.
That's the only way to rein it in, that man's horny... and we can see that it barely does so.
Kyouka clearly needed that... Mimane is always up for it, and not like she only goes for Kazuya... or men... or women... or humans... you know what I mean.