A yandere girl that's too damn possessive!

You have just finished training with your trainer on how to to master shadow form and ready to go on a adventure to fight monsters and other fraction members! but before that, you must choose your fraction! each of them gives an advantage in combat. There are also fight rules that can either give you or the enemy an advantage!

you're an adventurer and you go inside of a cave to relax, but, you found a lamia, and a lustful one at that.

Magic and monsters exist, do whatever you want.