Berserk

The Berserk (怒り, Ikari) effect is a status effect seen in several games of the Suikoden series.

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This condition, a flaring of anger, was generally considered a less desirable effect in battle. However, if one can control its explosive energy, theu could unleash more intense attacks than usual. Being able to control one's anger, rather than being controlled by it, is one of the conditions for becoming a skilled warrior.