Krasia Annerose, also romanized as Clasia Annerose, is a supporting character in The Banished Court Magician Aims to Become the Strongest. She graduated from the Magic Academy as the third‑ranked student and was a founding member of the legendary adventuring party Lasting Period. During her academy days she and her comrades, including the protagonist Alec, reached the sixty‑eighth floor of the royal dungeon and set a notable record. After the party disbanded she later reunites with Alec and their former leader Yorha to reform the group, now operating under the name The Endless Days.

Within the party Krasia serves as the primary healer, though she is also proficient in offensive magic, making her a versatile combatant. Her healing is driven by genuine concern for others; she dislikes seeing anyone leave her care before being fully recovered and insists that injured companions report to her immediately so she can do her job. This nurturing side is hidden beneath a cool and occasionally sharp exterior. She is frequently described as a cool beauty with a stubborn streak, yet those who earn her trust discover a warm, caring nature. She values loyalty, holds a strong sense of justice, and in tense situations her calm, analytical mind allows her to act with precision. However, her rigid demeanor makes patience difficult for her, and she has a noted obsession with cleanliness.

Physically, Krasia is an athletic, attractive young woman with long silvery‑blue hair, often tied back with a hairband. She typically wears a form‑fitting dress or pants, gloves, a cape, and a necktie, presenting a polished and elegant appearance. Her background, composed personality, and magical skill set make her an indispensable member of the reformed party, and her interactions with Alec and the others gradually reveal the kindness she keeps behind a cool front.