Fate/kaleid liner Prisma Illya

Illyasviel von Einzbern is an ordinary elementary schoolgirl who becomes a magical girl when the kaleidostick Ruby declares her a more suitable master than Rin Tohsaka. Rin, tasked by the wizard Zelretch with gathering seven Class Cards containing the spirits of legendary Heroic Spirits, discovers she cannot sway Ruby’s mind and must supervise Illya as she pursues the Class Cards. During Illya’s adventures, she gains a friend and rival in Miyu, the contracted master of Kaleidostick Sapphire, which likewise abandoned its original master and Rin’s rival, Luvia Edelfelt.