Fate/Kaleid Liner Prisma Illya

Rin Toosaka and Luviagelita "Luvia" Edelfelt, members of the Mage's Association, are tasked with retrieving seven Class Cards, medieval artifacts containing the life essence of Heroic Spirits. To aid them, they're granted Ruby and Sapphire, sentient Kaleidosticks that grant them magical girl powers and abilities. However, the two mages' poor relationship causes the Kaleidosticks to abandon them. Illyasviel von Einzbern and Miyu, two schoolgirls, become the new masters of the Kaleidosticks, which enables them to form a contract and join the Class Card hunt.