* Based on the manga by the same name by Hiroyama Hiroshi, itself a spin-off of the Fate/stay night erotic visual novel by Type-Moon.
Toosaka Rin and Luviagelita Edelfelt are magi from the Clock Tower, the headquarters of the Mage's Association, and they were sent to Fuyuki City by its director to collect Class Cards, each holding the powers of a Servant from the Holy Grail…