This game is about someone who rejected her kinky desires after certain events in her life, but now she gets confronted with them again one by one. In such a context, it would not make sense to immediately encounter the deepest depths of her desires. 😅
It will mainly depend on the player how far things will go. For example, the Bonding Time early-access demo gives a taste of a scenario when desire level 1 is unlocked.
I'd say the highest desire level will at least be similar to Kinky Dungeon.
One limitation that I set in stone for this game though is: "no on-screen penetration by male humanoids".