The classic old RPG-style, which I think is just based on Japanese Yen when I think about it...
Regardless of that, thank you for reading my silly comments and for making the game in the first place! There's not enough strip games in general, particularly any where the player actually exists as some sort of tangible entity.
(More to the pool! Come to think of it, I made a few characters of my own who are perverted girls, so maybe I just have a type...)