I Can Fight in the Holy Grail War All by Myself

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Just before dying, Imatoki bound himself to the "I Can Fight a Holy Grail War All by Myself" System, which tasked him with saving a world on the brink of destruction.

Determined to make his dream come true, Imatoki set off without hesitation.

But this System, whose name alone sounded unreliable, made him play a silhouette-guessing game before drawing a secret identity. If he got the answer wrong, it would randomly give his Heroic Spirit identity 1 to 3 debuffs.

Looking at the bizarre shape in front of him, which was so unrecognizable he couldn't tell what it was, Imatoki fell silent.

"...Is it a wyvern?"

[The answer is "Smoke-Mirror disguised as a wyvern"!]

"If you can't handle the game, don't play!"

Imatoki bound himself to a secret identity System to save the world. It lets him use the powers of heroes from human history, but randomly saddles him with 1 to 3 debuffs.

And so

[SABER: The Benevolent Prince]

The upright, gentle swordsman is a reliable and powerful presence in everyone's eyes. With his help, a dark organization that had been lurking for nearly half a century is on the verge of collapse. Yet at that moment, he turns against everyone.

"The organization must remain. It must remain for my sake."

[CASTER

"Don't just start introducing things on your own! And that introduction template is so outdated!"

◆Reader's Guide◆

1. A slow transmigration through multiple worlds with FGO secret identities. Possible worlds include Detective Conan, Jujutsu Kaisen, and Hunter x Hunter, as well as games like Persona 5 Royal and Fate/Samurai Remnant, and historical settings like the Warring States and Bakumatsu periods. No guarantees before the story begins.

2. The protagonist works for the Counter Force. No romance.

3. Just have fun.

4. If you like it, please add it to your favorites!

Theme: Hold fast to your beliefs and make your dreams come true.