Additional content aside (Lynn herself, Gender bending/major emphasis on the fantasy, the fetishism and some secondary characters like the persian team but there is more) this story so far has been faithful to the OG. If that's true then
While it has different versions of the original...
Rather than hole, I think it's rather a literal vaccum for Aizawa, after her first possession we have seen more than once that she was getting literally sucked in into Kasumi without her own consent. With the joke drawning it seems they are more curious at the first and don't feel the "pull" as...
The teacher will think twice to run away, she would be the joke of the lewd teacher running around the school that it may lead to severe consequences (fired, easily) if she can't explain herself out of this one.
It won't change her psyche, Wakana is cooked mentally on her volition.
The childhood friend is sane compared to Wakana and she only has show physical stupidity(like going overboard with the biting process by showing her jugs than just showing her neck) than the mental kind.
I'll definitely see Asumi joining the industry, make a new brothel by topping (or power bottoming) the competition and ensuring a perfect work life balance