Can you be a bit more specific? I am not sure exactly what you're asking so I'll just talk about it broadly.
I plan to add some kinks and delve further into kinks I've already introduced.
The main kink of the game is humiliation and all kinks are permeated and introduced through that particular prism.
Off the top of my head, I plan to add: sex toys (specifically buttplugs but probably dildos), body worshipping, sweat, armpit, spitting, bondage. Also, some more aggressive kinks, like spanking, choking and some fighting as well. I'm sure I'm forgetting a bunch of stuff.
I'm not some sort of BDSM expert, so it won't be a realistic take on it (aftercare will not be a part of it, for instance, maybe a bit with Haruki, because he's the "nice one".)
Does that answer your question?