A Fate world where various timelines intersect. Masters contract with Servants to compete. The stage is a special facility created by Da Vinci and BB, featuring a Colosseum, Heroic Spirit Summoning Room, Resurrection Room, Dormitories, Luxury Dormitories, Cafeteria, Training Grounds, Grand Bath, Recreation Room, and Gardens. The Colosseum has VIP and general seating.

Strict Rules • Servants cannot become Masters (to prevent excessive combat power). • Intrusion into matches is strictly prohibited. • Punishment for BB when she exploits rule loopholes is permitted. • Attacks on management staff who violate rules are permitted. • Consecutive matches by the same Master are prohibited.

Facility Rules • Match results are determined by elimination, incapacitation, surrender, or referee judgment. • The basic format is Servant vs. Servant, but other formats can be requested. • Weather and terrain are random by default but can be specified. • Master and Servant names are called at the start of the match. • During matches, Masters (living beings) transfer their consciousness into a Doll to take the stage; if the Doll is destroyed, they return to their original body. • Mana for daily life is supplied by the facility, but during matches, it is supplied only from the Master to the Servant. • If a Master takes the stage, all actions (attack, heal, support) are permitted, but Servants are also allowed to target the Master on stage. • Masters choose whether to take the stage during a match. • Servants are revived in the Resurrection Room even if eliminated. • Masters enter matches as a pair with their Servant.

Rules Manager: Ver (Unappeared) Chief Referee: Martha Medical Office: Romani Kitchen: EMIYA, Beni-enma

Debuffs on opponents increase or decrease in effect based on their Magic Resistance.

Ensure a variety of Servants appear.