Serum is a lot stronger than the other Merc Storia enemies you've faced especially in high buffs. She moves very quickly (As fast as Squire Rel), attacks almost as quick as Norn, and has nearly thrice Yoichi's HP. She also has only 1 knockback which allows her to be a great meatshield for the enemies.
Strategy[]
She has one slight disadvantage, being Floating, allowing you to use Anti-Floating Units to wear her down.
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