Albertina, a princess of the Claw Clan, is the older twin sister of Christina. She possesses green hair and blue eyes and dresses in customary Yggdrasil attire. Her personality is cheerful and curious, forming a direct contrast to her sister Christina. Characterized as innocent and slow-minded, she lacks Christina's cunning and intelligence. As part of the Claw Clan's royal lineage, she serves as an Einherjar, a magic-wielding warrior maiden. A rune grants her superhuman speed and slight presence concealment, making her an effective assassin. Her connection to protagonist Yuuto Suoh occurs when she becomes his sworn daughter, a decision made solely because her sister Christina formed the same bond, highlighting Albertina's tendency to follow Christina's lead. As part of a political arrangement, Albertina is sent to marry Yuuto, though Christina explicitly intends to prevent any physical relationship between them, underscoring Albertina's role as a political instrument. Her relationship with Christina defines much of her identity and actions, with Christina frequently deciding for her. Albertina demonstrates little personal ambition beyond this familial bond and dislikes attending school, unlike her sister or other characters. Her name, meaning "Noble" or "Bright," carries ironic connotations given her portrayed naivety. Her role remains consistent as a supporting figure whose actions primarily serve her sister's schemes and the broader political narrative involving the Claw Clan and Yuuto's leadership.