What If Ken Kaneki Were Tanjiro's Alternate Self

[Voice actor reference] As everyone knows, Kaneki and Tanjiro are both voiced by Hanae.

Tanjiro always has to fight so hard, giving it his all, and ends up badly injured. Even though he isn't strong enough yet, he keeps fighting and protecting everyone.

Then one day, some unlucky [demon] really did beat Tanjiro unconscious.

Kaneki was summoned in his place,

and the two switched bodies.

Then Kaneki swept through the opposition. (Omitting ten thousand words.)

Tanjiro's friends were all shocked!

So the incredibly gentle and kind Tanjiro

had an alternate version in another life who was incredibly fierce and cold.

(Though Kaneki is an angel too, after going through XXX, he became cold and distant. This refers to white-haired Kaneki before RE.)

I posted this prompt on L on January 27, 2022.

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Update, March 14, 2022:

I think the unlucky demon should be Daki's brother. The finger-bending part suits Kaneki's vibe perfectly.

And their combat strengths match up pretty well too!

Our friend "Feixi" suggested: Tsukiyama and Upper Rank Two are both voiced by Mamo.

Excellent! This has made our prompt even bigger!

In that case, Dazai, Tsukiyama, and Upper Rank Two are all voiced by Mamo. Looks like we can cross over not only Demon Slayer and Tokyo Ghoul, but Bungo Stray Dogs too!

Pats my belly~

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[Note] If anyone likes this premise or prompt, feel free to take it. How come none of the diligent Jinjiang authors have started writing it yet?

Knock knock, I'm hungry!

Theme: Be a kind and good person.