Currantly the developer intends for the protagonist to have an ambiguous gender, so I don't think they have any planned outside of diaper stuff. Mabye later on they could give us the simple option of picking the players genital type for nude scenes, but we can only hope.
Viewing post in Tower of the last Demon (AN ABDL RPG) Ongoing comments
to be honest I kind of wish they would have started with that at the beginning of the game developing because this game doesn't really feel like it just pornographic in nature or an adult game all it really does feel like is that we're taking care of people as a babysitting job doesn't really feel all that special