This is an idea I've had for a while. Anyway basically its a Fate Stay Night and Kingdom Hearts crossover. I don't really have the plot, but basically Sora summons Saber Altria, Riku summons Assassin Jack the Ripper, Maleficent summons a Caster, Ansem an Avenger Joan of Arc, and for the rest you can figure it out. In Kingdom Hearts Birth by Sleep which can be called Fate of Hearts 0 and the 2.8 will be 0.5 I suppose. Ventus will summon Ruler Jeanne D'Arc, Terra will summon an Archer (you choose the Archer), Vanitas summons Saber Alter, Xehanort, Avenger Angra Mainyu, and for the rest you decide, also you can choose if Aqua will be a Master in the Holy Grail War or not. Also Ruler stays by Ven's side while he is asleep in Castle Oblivion, when Sora and the gang appear Ven slightly moves which Ruler takes notice of. In Kingdom Hearts 2, Organization XIII will have 13 Servants for each of their members. Xemnas will get Ruler Amakusa Shiro Tokisada, Xigbar: Gunner Billy the Kid, Xaldin: Lancer Li Shuwen, Vexen: Caster Mephistopheles, Lexaeus: Launcher Karna, Zexion: Berserker Hijikata, Saix: Avenger Hessian Lobo, Axel: Archer EMIYA, Demyx: Faker Iskandar's Shadow, Luxord: Rider Francis Drake, Marluxia: Manslayer Okada Izou, Larxene: Assassin Hassan of Serenity, Roxas: Saber Mordred, Xion: Shielder Mashu/Galahad. That's what I got for them, you can change it if you like but Roxas summoning Mordred will stay the same. During KH2 the Apocryphia system is activated. Also Re:Coded will have Digital Sora as a participant of the Moon Cell. This is the stuff that I would like to happen, but the Only things that are MANDATORY is that Sora summons Saber Altria, Roxas summons Saber Mordred, Ven summons Ruler Jeanne D'Arc, and Digital Sora summons Saber Nero. Other than that do whatever you want to do.