72 ZI-O Grand Order » by Forgeravin Tokiwa Sougo a normal 18 year old student with a dream of becoming King is met with a dark future. In where he becomes the most hated Overlord, and that he destroys the world. Things only continue to change as as he's brought into the Chaldea Security Organisation, and is tasked in saving the world. All while collecting the powers of other Riders from other universes. RIDER TIME!
T, English, Adventure, chapters: 5, words: 84k+, favs: 98, follows: 95, updated: 3/11 published: 9/22/2018, Sento K./Takumi K./Build, Sougo T./Zi-O, Geiz M./Geiz, Tsukuyomi
18 FGO x Kamen Rider Build New World: Cross Mordred » by FateReiwa When Chaldea detects an anomaly in the timeline. It is up to humanity's last master, Ritsuka Fujimaru, and the Knight of rebellion, Mordred Pendragon to correct this. Unknown to them, they will face heroes from another world. This takes place roughly after Goetia's defeat and during Kamen Rider Build: Episode 49
T, English, Sci-Fi & Fantasy, chapters: 6, words: 19k+, favs: 37, follows: 31, updated: 1/24 published: 1/14, Tsukasa K./Decade, Sento K./Takumi K./Build, Ryuga B./Cross-Z, Evolto
3 Extreme Hero: Kamen Rider Grand Order » by The Kingdom of Ruby Luxuria A massive supercomputer outside the Earth, the Moon Cell has been having Heroic Spirits appearing on Earth all over the place. They are either fighting against each other or against other human being. A group of heroes with the powers of Heroic Spirits are humanity's final hopes in this war. But what does it have anything to do with the Grand Order?
T, English, Sci-Fi & Fantasy, chapters: 2, words: 5k+, favs: 2, follows: 2, updated: 11/13/2016 published: 8/8/2016
Extreme Hero: Kamen Rider Grand Order (rewrite) by The Kingdom of Ruby Luxuria A war between worlds has reached to its climax. The underdog faction is now fighting against the strongest faction. The Earth is now at stake here. Will the defending team or the offensive team won? And what is the dark truth behind this Unholy Grail War? Kamen Rider and Fate franchise x-over with slight High School DxD in there.
T, English, Fantasy & Adventure, words: 5k+, favs: 2, follows: 1, 11/13/2016