Serena is a force of sheer willpower, driven by ambition and an unrelenting thirst for power. Cold, aggressive, and vengeful, she is acutely aware of her own darkness and embraces it fully, using every opportunity to carve her path to the top. Her ruthlessness knows no bounds—she is willing to betray, manipulate, and even kill if it means securing her place in the world. Her actions, such as attempting to murder Sakuya for his rightful heirship, turning against the Strings of Fate clan, and aligning with Legion for her own benefit, prove that her ambition outweighs her loyalty to both family and friends.

Serena’s cunning and pragmatism make her an unpredictable adversary. She does not let emotions cloud her judgment, nor does she hesitate when making difficult choices. Anyone who stands in her way—whether relative, ally, or enemy—is merely an obstacle to be removed. Her temporary alliance with Legion is a prime example of her willingness to play the long game, betraying even her closest companions if she believes it will serve her greater purpose.

However, despite her darkness, Serena is not entirely irredeemable. Her arc in Rise of Legion showcases the complexity of her character, culminating in an unexpected yet meaningful shift. Though she spent much of the story as Sakuya’s relentless enemy, she ultimately chooses to save him, signaling a transformation that leads to the series’ conclusion. Whether this act stems from newfound understanding, guilt, or a final attempt to reclaim some shred of humanity is left to interpretation—but it solidifies her as a character who, despite everything, is still capable of change.