Seeds of Despair - Tales of the Gothic Warrior, #2

THIS SERIES IS MEANT TO BE UNREALISTIC FUN. If complete believability is a must, it might not be for you... but if you like the sound of an awesome female brawler standing toe to toe with huge men and monsters in brutal fistfights on sheer toughness and badassery, maybe it is. Fresh off a big win, mixed martial arts champion Gunner challenges his friend and rival, goth metal singer and ultimate street fighter Freya Blackstar, to a rematch of their past battle.
But when the outcome is not what he wishes, his resulting misery leaves him vulnerable to a mind and body altering supernatural influence. In order to save him before he goes too far, his friends will have to use all their strength and wits... and maybe a little help from the internet. A novelette. Second chronologically in the Gothic Warrior series, but the stories do not have to be read in order.