[Crossover] Whoever Falls for This Heroic Spirit Throne Can Have It

Originally titled A Report on Observing Nonhumans

"A tale stretching back to the dawn of human civilization on the Mesopotamian Plain.

The moving legend of the tyrannical king of myth and the only friend he ever acknowledged, standing shoulder to shoulder to defy the last of the gods."

That was how the story should have gone.

Yingze, abandoned in Mesopotamia by an irresponsible divine beast, smiled as he ripped apart the book in Yagen Toushirou's hands.

That idiot, with his head full of water, actually dared to spread these tales so openly.

And he hadn't mentioned Yingze's existence at all. Not even once.

Should he go to the Throne of Heroes and smash that guy's Spirit Origin to pieces?

Gil: Ha. Come up here and try.

Yingze: ...

Right, there was another troublesome guy on the Throne of Heroes.

Reader's Guide:

The protagonist is nonhuman and a native of the FGO world and setting. He did not transmigrate.

The story doesn't follow any of the original plots, and there are many crossover worlds with very chaotic timelines.

[Important] This story includes original historical details and headcanon.

Main worlds and timelines:

[Bungo Stray Dogs: BEAST]

[Demon Slayer]

[Hyakki Yagyo: Heian-kyo]

[The British Empire]

[The Seventh Singularity: Absolute Demonic Front]

[Holy Grail War (VI)]

In short, this is the story of a long-lived and affectionate immortal who dreams of traveling across all kinds of worlds, even if he's a little bored.

I wrote this story for myself. If you enjoy it too, that's even better.

Theme: All roads lead to Rome.