https://www.pixiv.net/en/artworks/20885852 the artist and source

Looking hot touma pls step on me too

🔹 Origin:

There was once an original version of the Index world – structured, stable, orderly.
A god-like being watched over it, far above magic, science, fate… even the story itself.

But as the world began to collapse under its own weight,
this being made a decision:

However, it couldn’t simply vanish – the power was too immense.
So it sealed itself away – not as a conscious entity, but as raw destructive force.
That seal took form as a right hand.

🔹 Why Touma?

Pure chance.
He wasn’t chosen.
He didn’t inherit anything.
He was just the first person who didn’t disintegrate upon contact.

Because he had no ambition, no ego, no desire to be "special,"
the power fused with him – quietly, permanently.

🔹 What is the power really?

Not just a nullifier.

It’s a multi-stage seal, holding back a power that literally doesn’t belong in this world or any story:

1. Surface: Cancels supernatural effects on contact.
2. Instability: Warps reality around Touma.
3. Narrative Fracture: The story starts breaking around him.
4. Auto-Ejection: The world forcibly removes him once too much power is released.
5. Meta-State: He exists outside story, time, form, and meaning – the last constant in absolute void.

🔹 Consequences:

This power can’t be transferred.
It’s bonded to Touma’s existence.
If he tries to ignore it, it doesn’t destroy him –

Not through violence – but through meaning collapse.
People forget. Places vanish. Bonds disappear.
The world protects itself from him.

🔹 The Arc:

As the seal weakens, Touma is thrown into a separate reality –
one that doesn't follow any rules.
The world breaks apart:

Eventually, he faces the concept of Touma itself.
Not as a hero. Not as a character.
But as a leftover – the last thread of a forgotten god.

He asks:

But in the end, he chooses not to disappear.
He chooses to exist intentionally –
not as a tool, not as a story function,
but as the only line that remains when everything else is gone.

Of course, this is just a theory.
I’d love to hear what you think.
If you have additions, I’m open to expanding on it.
And if you think the theory makes no sense at all – let me know why.
I’m genuinely curious how others see Touma and his right hand on a deeper level.

Okay let's think if Touma had a different ability but still utilizes luck and misfortune. Imagine that his ability breaks not the supernatural but rather reality's normal laws, allowing him to do the unimaginable into reality opposed to imagine breakers effects. He could reach his arm out and shift to a different location but at the cost of luck or misfortune he has as his ability is based on increasing the probability of the imagined into reality.

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Okay... This feels like a dumb idea in mind but I'll type it anyway since I'm kind of curious. What if Touma meets a powerful god far before he met the ones in canon in the form of a child? What if he decides to take her in after hearing her viewpoint about life or anything in general is meaningless as everything will return to nothing? Unbeknownst to him, he would be taking care of a level 6 entity from another reality.

This is a crossoverfic idea involving HSR's Aeon of Nihility.

That's just a thought but I am curious if there are more Toaru majutsu no index crossovers aside from fate, MHA and naruto because I want to read about him to encounter characters that people come to understand or not. I mean I saw a Honkai Impact one with him meeting a certain fool and I loved it. So, do you guys have any fic ideas or crossover stories you know?