Yeah, Pleasure by default is however many tentacles are molesting you.  Some monsters may have special tentacles that increase it further, and some have special abilities that cause pleasure to increase without being raped (although pleasure gained in that way doesn't always force a will check).<br/><br/>As for how much Ahegao it is, I'm not really sure yet.  Right now I'm focused on the main mechanics of getting raped, not quite the "damage" part of it.<br/><br/>More game mechanics thingy:<br/><br/>Since a character's Ahegao is tied to their HP, it means it'll go up every level.  Their Will save will also go up every so often.  This makes a slight difficulty for balancing.  Ideally, a character at level 1 fighting level-appropriate monsters, a character at level 5 fighting level-appropriate monsters, a character at level 10, 15, and 20, should all get "hit" at about the same frequency; that is, as their defenses go up, their opponents' attacks also get more accurate.  Granted, some characters and builds will become much more effective at avoiding certain effects than others (for instance, a monk will end up with a much higher will save than a rogue at higher levels), but it should average out to be about the same.<br/><br/>Modifying things to the game, pleasure vs will save seems simple enough: more powerful monsters will give more pleasure.  That does mean characters getting raped will end up with a penalty more often (remember, I'm adding in rules that reduce most of your d20 rolls by 1 for every 5 pleasure you have), but that shouldn't make a huge difference.<br/><br/>Ahegao damage is a bit more difficult, however; since HP scales up rather quickly, it means the ahegao damage will also have to scale up.  So, that means I likely have to tie it directly to the monster; some monsters will deal more ahegao damage than others, just like how in normal Pathfinder, stronger monsters deal more damage.  I'm not sure how to balance it good, though; right now I'm thinking keep it a bit on the low side, but it increases if you fail your will save by a lot.  It's something that'll be tied to monster stats, not the basic rules, though, so I can change it for new monsters if it ends up too low right now.