This article is about the Extra skill wielded by Ryota Sekiguchi. For the Unique Skill awakened by Shogo Taguchi, see Berserker. For the Unique Skill by Hiiro, see Berserk.
Frenzy ｢狂戦士化, kyō senshi-ka, lit. "Berserker Transformation"｣ is an extra skill used by Ryota Sekiguchi.
Abilities
It allows the user to more than double their physical strength and speed at the cost of magicules. An inexperienced user seems to lose control of their sanity.