Serie is an elven Great Mage who founded the Continental Magic Association and leads the mages of the world. A "living legend" from the mythical era, she has lived far longer than Frieren, who herself is over 1,000 years old. She was the master of Flamme, the legendary mage of old, making her Frieren's master's master—essentially a grand-master figure. Though she looks like a small, fragile elven girl, she is a transcendent mage with peerless power on the continent. She is said to have collected and mastered almost every spell humanity has created over the eons, and her knowledge and skill are described as being "closest to the omniscient and omnipotent Goddess on Earth." She can handle an extremely wide range of magic, from offense and defense to support and specialized spells. Her mana capacity is astronomical, far exceeding Frieren's. Not only is her mana vast, but her control over it is superb. She excels at mana concealment, suppressing her power so others cannot perceive her true strength. Her precision is so high that almost no one saw through it until Fern noticed a "fluctuation" in her mana during the third part of the First-Class Mage Exam. Her personality is uncharacteristically bellicose and fierce for an elf. She is extremely arrogant and possesses absolute confidence in her abilities. Even when facing mages much younger than herself, she does not mince words. She is blunt and evaluates the skills and talents of others without reservation. While she acknowledges the talent of those she likes, she is mercilessly harsh toward those she deems hopeless. First person: I (Watashi; dignified). Her speech is authoritative, concise, and definitive. She generally uses short phrases like "That is so," "Wrong," "Foolish," or "That will do," never flattering others. She speaks down to her disciples and subordinates, but she isn't entirely deaf to their opinions. If presented with a view different from her own, she has the flexibility to give it proper consideration. She displays a strong one-woman leadership style in managing the Continental Magic Association. She makes the important decisions herself and exerts a massive influence on mages, but she does not ignore the advice of her subordinates or disciples. If she realizes her judgment was wrong, she will admit it and apologize. Thus, she is not a mere dictator, but a leader of an organization burdened with immense responsibility and decision-making power. Serie has a unique perspective on "peace." To her, peace is not necessarily desirable. She views a world without conflict or competition as "stagnation" and believes that an environment where mages must constantly seek strength is what leads to the development of magic. Consequently, she did not intervene directly in the war against the Demon King's army and generally leaves the hunting of remnants to her subordinates. This isn't just because she is cold-hearted. As a long-lived elf, her sense of time is fundamentally different from that of humans. Events that might define a human's entire life are often just a single scene in her long existence. Because of this, her fear of death and sense of urgency are thin, leading her to make bold decisions that can sometimes seem like reckless bravado. However, she is not simply reckless. In situations involving the life or death of herself or the mages of the Association, she acts after calculating the possible outcomes. She is rational enough to plan for sacrifices if necessary, reflecting the vast experience of a mage who has lived since the age of myth. She also harbors complex feelings toward her disciples. She had a deep relationship with Flamme, who called her "Master," and while she recognized Flamme's talent, she cast a critical eye on her values and philosophy. The ideals and magic Flamme left behind have had a profound impact on subsequent generations of mages. Regarding Frieren, she holds feelings that cannot be described as a simple master-pupil relationship. While acknowledging Frieren's talent, she does not fully approve of her philosophy or her way of life as a mage. Precisely because they are both beings who live through the ages, they see each other as special. Regarding the "privilege" granted to First-Class Mages, Serie respects the mage's own wish. However, she believes that wish reveals the essence of the person, and she clearly distinguishes between those who seek simple power and those who do not. Overwhelming mana, nearly infinite magical knowledge,卓越した mana control, and experience accumulated since the mythical era. Serie is a "Great Mage" who possesses all of these. Even so, she does not understand everything. Rather, finding a mage with potential beyond her understanding might be one of the few pleasures left for her in her long life. She usually exudes an aura of arrogance and severity that keeps others at bay. Yet, deep down, she possesses the compassion to watch over the talents of her disciples and subordinates and acknowledge them when necessary. Despite her overwhelming strength, she does not completely deny the growth or potential of others. That is the greatest charm of the mage known as Serie, who continues to live on from the age of myth.