also tie battle and sexual action to energy... couse:
energy strange stat in this game indeed...
without it u can:
1.traveling all over world (countless times per day=) more strange what if u have energy it drained by travel)
2.battling (countless times)
3.<censored>ing all thouse who was defeated (countless times) (and i wish some other way get MP... even natural every day recovery by 1-5 already will be good... couse now all u need countles time roaming around starting loacation and violate all vilians to roket up you mp... im afraid what for male MC it must lead to disfunction of his 'tool' xD(yep its fantasy and author can say what he still can do it.. but... but.. i dont know -_-))
BUT u need <censored> 20 energy (it is 1/5 of base maximum) for open randomly generated(u off energy in 90% cases when u find it) treasury chest, and u even cant rest on loacation with chest...