Lightning's younger sister and Snow's fiancée. At one time an ordinary young woman, her involvement in an accident sets the wheels of drama in motion. Some time following that drama, a certain incident would cause her to pick up the bow and set off on a journey to resolve time-distorting paradoxes.
Serah's design is based on her Final Fantasy XIII-2 appearance, with the outfit Lightning gave her at the beginning of her new journey. She wears a revealing form-fitting dress of white, reddish-pink, and gold consisting of a white top, pink sections on the front and back connecting the top to the skirt over black shorts, cut-out sides at the waist, crisscrossing pink straps on the sides of her torso, and two straps that go over her shoulders into a cross-back shape. She wears a storage pack on her right hip that hangs from her waist, pink and black thigh-high leggings, and purple ankle boots. Serah retains her earrings and engagement necklace, and wears a pink choker, short pink sleeves under gray gloves that have gold ornaments, and gold armbands one in the shape of a bird that rests on her left bicep where her l'Cie brand used to be.
Serah is first seen in Utopia Niveus fighting Sweepers. Lightning finds her once she hears her screaming.
At first, Lightning is unaware of how Serah can use the bowsword, and she refuses to let Serah fight, claiming that Serah is a civilian, not a warrior. But Galuf, Vaan and Mog comment that the only thing that matters is the person's will to fight
|Faerie's Bow (XIII)
|5★ (EX)||70||Equips the EX Ability Ultima Arrow.|
|Amazon Bow (XIII)
|5★||35||Increases Moonlight's BRV gain, grants it to allies as well and lowers its action delay. Increases the potency of Attack Up. Grants all party members small Max BRV Up for 3 turns.|
|Based on her weapon of the same name from Final Fantasy XIII-2. It shares the same appearance as the Starseeker, but with pastel yellow color.|
|5★||15||Increases the potency of Wound. Increases the potency of Max BRV Down and Poison, and extends their duration.|
|Based on her weapon of the same name from Final Fantasy XIII-2.|
- Command abilities
|Default 1-hit attack that lowers the enemies' bravery gauge.|
|Default 1-hit attack that lowers the enemies' HP gauge.|
|1-hit BRV attack. Inflicts Poison and small Max BRV Down for 2 turns.|
|Increases BRV based on Attack then raises it by 1.2 before inflicting an HP attack. Grants Small Attack Up for 3 turns.|
|EX Ability, BRV+HP, Magic, Ranged, AoE, Debuff|
|7-Hit BRV+HP attack. Deals 30% HP damage to other enemies. Deals more HP damage to other enemies if the target is broken or gets broken. Inflicts Megami no Hikari to all enemies for 5 turns.|
- Passive abilities