Not only did the limited edition 3rd season Blu-ray package of ｢Carnival Phantasm｣ come bundled with a copy of ｢Melty Blood Actress Again: Current Code｣, but it also included a 12-minute OVA, entitled ｢Fate/Prototype｣. This bonus disc is an animated digest of the novel originally written by Fate/stay night creator Nasu Kinoko when he was in highschool — it served as the original draft for Fate/stay night. Some screenshots can be found after the jump.
In Fate/Prototype, Saber is male while the master he serves is female. Some cast changes were also applied.