Belius is a unique boss found in the Temple of the Spirit. She is accompanied by two clones that share her HP pool. Weakness: Fire. Strategy: The key to this fight is to destroy the two candles in the arena. Doing so will temporarily stun Belius and make her vulnerable. Use Rita's Fire Ball to quickly destroy the candles. Belius uses ice and dark magic, so equip accessories that boost elemental resistance if possible. Her clones can be annoying, but focus your attacks on the main Belius when she's stunned. The Secret Mission involves destroying the candles while Belius is casting a specific spell. This requires quick action and good timing. Keep Estelle on healing duty and use Over Limit to unleash powerful combos when Belius is vulnerable. Rewards: Gald, Experience, and potentially a title for Karol if the Secret Mission is completed.
