Berserk Rage utilizes the current user's already present magical ability. Berserk Rage is a born ability, coming only to half demons. It is often triggered by emotional turmoil, and can not be purposefully triggered by its user. It's difficult for the user to pull themselves out of the Berserk Mode.
When using Berserk Rage, the user's appearance will be altered, at times donning demonic features that combine with their already human features.