Marisa ​is a playable character in Fire Emblem: The Sacred Stones. She is a member of Gerik's Mercenaries. She is an aloof and detached beauty, and a master of the blade, earning fame as the "Crimson Flash" because of her great speed. She seeks to surpass her father, who was also a great swordmaster. She is unusually clumsy at everything outside of fighting, as revealed in one of her support conversations with Gerik. It is also shown that she secretly has a crush on Gerik, as her supports with her friendly rival Tethys reveal.

Regardless of the route, she is accidentally deployed under the hire of Grado, while Gerik and the other Mercenaries were hired by Innes. In Eirika's route, she switches sides after speaking to Gerik, not worried about what this would do to her reputation. In Ephraim's route, she switches sides after learning about the mix up from Ewan.

In her ending, she became the leader of a mercenary force of her own, defeating all who would challenge her to a duel. If she reaches an A support with Gerik, she stays with him and becomes the group's fencing instructor, while if she reaches A support with Joshua, she swears loyalty to him and becomes Jehanna's top swordfighter.

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