ONA
Description
Raiden Mei is a central character in the anime "Cooking With Valkyries," where she is depicted as a student of St. Freya's Academy. She is known for her tall, elegant stature and is recognized as a skilled fencer, often carrying herself with a noble and mature demeanor. Her physical appearance includes long, dark hair, which she typically keeps half tied up. Her surname, Raiden, translates to "thunder and lightning," which connects directly to her latent Herrscher powers as the Third Herrscher, also known as the Herrscher of Thunder.

Within the context of the anime, Mei's most defining trait is her exceptional cooking ability. She is canonically the best cook among the Valkyries, and her culinary skills are a core focus of the series. She frequently prepares meals for the other residents of St. Freya, including her close friends and classmates, Kiana Kaslana and Bronya Zaychik. Her personality is characterized by a kind, caring, and motherly nature, which is often expressed through her dedication to providing delicious and nutritious food for those she looks after. She is also portrayed as patient, diligent, and an excellent student, embodying a generous and elegant persona that stems from her strict upbringing as the daughter of the prominent Raiden Ryoma.

Despite her outward composure and kindness, Mei carries a complex internal history. Prior to the events depicted in "Cooking With Valkyries," her father's company, ME Corp, became embroiled in a financial fraud case, leading to his imprisonment. This fall from grace caused her former classmates and friends to distance themselves from her, forcing her to harden her heart and build a wall around her emotions. This period of isolation and despair ultimately led to her becoming the host of the Third Herrscher, granting her the tremendous and dangerous power over lightning. Her struggle with this power and her fear of hurting others is a significant part of her character, though in the lighter setting of "Cooking With Valkyries," these underlying tensions are less overt, with her gentle and nurturing side taking precedence.

Her motivations are deeply tied to her relationships, particularly with her close friend Kiana Kaslana. While the spin-off series focuses on daily life and cooking, the foundation of her character is driven by a desire to protect those she loves. In the broader narrative, this need to save Kiana from the effects of Honkai corruption leads her to make difficult choices, such as fully embracing her Herrscher powers and joining the organization World Serpent. However, in the kitchen-focused environment of "Cooking with Valkyries," her motivation is more direct: to care for her friends and bring them joy through her culinary talents.

In terms of notable abilities, while her Herrscher powers grant her mastery over lightning and immense combat capabilities as a Valkyrie, the anime highlights a different set of skills. Her swordsmanship, honed over many years of practice, is a testament to her discipline. Yet, it is her supreme mastery of cooking that stands as her primary ability within the series. Her skill in the kitchen is such that fights often break out among her peers for a slice of her cake, establishing her as the unofficial chef and caretaker of her group. In the "A Post-Honkai Odyssey" timeline, which takes place years later, her leadership skills have also developed to the point where she serves as the leader of a Schicksal squad.