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The Gencross Tome (Japanese: 異性有利の魔道書Opposite Sex Advantage Magic Book) is a tome that debuted in Fire Emblem Warriors, appearing exclusively via its paid downloadable content. The Gencross Tome is a tome which comes with a built-in attribute that boosts damage output against an opponent of the opposite gender as the wielder--simply put, a male wielder deals more damage against a female target, and likewise a female wielder deals more damage against a male target--but lowers damage output against a same-gender opponent.