

Scarlet next appears in Castle Shirasagi in the opening sequence of Chapter 16 with Ryoma, where they quickly rush to aid Yukimura in quelling a Nohrian invasion that has broken out there. She then departs from the vicinity with Ryoma. When Ryoma expresses incredulity at Scarlet's decision, an amusing scene ensues that sees Ryoma becoming flustered when she snaps at him and assures Corrin that she will lecture him while they are en route to Castle Shirasagi. She then makes the decision to place her trust in them even before Ryoma does, under the pretext that they have good eyes that do not lie of their owner's intentions. Following the subduing of the battle by Corrin's army's intervention to put an end to the fighting, Scarlet introduces herself to Corrin when they attempt to convince Ryoma to join their cause. Scarlet first appears alongside Ryoma and the Hoshidan army in Chapter 13, where they take up arms against Nohr in Cyrkensia. When Hans and the Nohrian troops begin massacring the local civilians and the wounded Hoshidans who are left behind, Scarlet is executed in an especially gruesome manner. Despite the best effort of the rebels, they are eventually defeated in the ensuing battle. The rebels clash with Corrin's army when the latter is deployed by Garon to eliminate them. Scarlet appears in Chapter 13, where she, alongside Takumi, Reina and Orochi, leads a rebellion uprising that has broken out in Cheve. Scarlet subsequently aids Corrin's effort to put an end to the age-old conflict shared between Hoshido and Nohr.

As they make their escape, Scarlet comments on how she never thought she would have to use their escape tunnel so soon, and reassures Corrin with a hearty slap on their back. Scarlet is initially hesitant to abandon her fellow resistance members, but knows that if Garon is killed, Cheve can be truly liberated, and makes the decision to accompany the Hoshidan royals to Nohr. Midway through their conversation, the safehouse is under attack by Nohrian forces cracking down on the resistance.

She is humbled by their presence and requests to join the group, which Ryoma accepts. After a proper introduction, Scarlet realizes that the Ryoma before her is the High Prince of Hoshido, and that his siblings have also come to assist him. Under Ryoma's lead, Corrin's army is then led to the Cheve Underground, which functions as the resistance effort's base of operations in Chapter 14. Scarlet then briefly introduces herself and her position to Corrin before the resistance General reveals himself to be Ryoma. Scarlet and her resistance force then arrive shortly after, forcing Leo, Camilla, Hans and the rest of the Nohrian forces to retreat. Just as Leo attempts to execute Corrin at the end of Chapter 13 in the village of Cheve, a masked resistance General arrives and wounds him, halting him in his attempt. The leader of the anti- Nohr resistance in the occupied city of Cheve, Scarlet is known to have gained her inspiration from her grandfather, who was a servant of the king of Hoshido many years earlier. 6 Choose Your Legends Placement History.

