It's a trailer for the F/GO x KR Gaim story I'm going to make.

Shinji Kidou has died. Thinking he was going to heaven, he landed in the Throne of Heroes. He pondered about the war he might be a part of.

Haruto is send to another world and regressed into a child watch as Shiro regains his position as the wizard of hope

The Holy Grail War has begun again. One amnesic Master has lost the life that he once had and now struggles to protect what is left of the life that he has come to accept, but now faces the possibility of losing it all. With his Servants by his side he will protect what is left as he tries to figure out the secrets of his past as he unlocks the power of the forgotten hero... Agito.

After surviving the Fuyuki fire disaster, Shirou was taken by The Society of Shadows who transformed him into a superhuman through forbidden science and dark sorcery. Ten years later, he escaped the organization and returned to Fuyuki City, attempting to trace his true identity he had forgotten, just in time for the fifth Holy Grail War to be conducted in said city.

He remembered. He remembered it all. The power he once wielded, the war he went through, the death's he caused, the girl he protected, the child he saved, the monster that killed him, his last stand with his friend and his dying wish to him. Now with his power restored the legend of the rider war shall return to the battle field. (Chapter 2: Poll results.)

KR Blade/Fate/Stay Night xover Fate's change and they are realized in ways they aren't imagined. From the release of immortals to a Battle Royale between heroes from space and time. Follow the journey of Shirou Emiya, Kamen Rider Blade and Master of Saber, in his fight against Undead and the Holy Grail War. To be a protector of Justice. Pairings: Undecided.

Following the events of the recent Holy Grail war, Taiki Kudo is about to resume his normal life and help his friends, but FATE has other plans when he is taken to another route where the Holy Grail war exists, and that even Armored Riders and Yggdrasil are involved in addition to the Masters and Servants, and now he is forced to fight again to survive. Feat. KAMEN RIDER GAIM.

In a war where the good must fight each other only the one who fights hardest will survive! Every Servant is a Kamen Rider, summoned from the throne to heed the call of the Holy Grail. Some fight for themselves, some fight for others and some don't need a reason at all. The Holy Grail is filled with many heroes, many of them are Riders.

Basically these are random Kamen Rider Idea's I have but are not likely to have anything done about them so they are all up for adoption next is Gaim Anime War

When is a legend a legend, when does history that's so well known to all become myths, whispers of battles long since past? However, what is once lost by time does not necessarily mean that it will stay lost. Prepare for a Legend Re-Born! Pairings inside

All Taiga wanted was to take Shirou away for a nice relaxing vacation. She certainly did not think it would be this troublesome. FSN x Kamen Rider W