There’s a Demon King Inside the Hero
I was summoned to another world, became a hero, and killed the Demon King.
After fulfilling my duty and returning to my original world, what greeted me was an ordinary body, still holding the memories of my time as a hero.
And then.
“…The Demon King?”
[…Hero?]
All that’s left in my mind is the lingering thought of the Demon King, my sworn enemy, who has now settled there.
But I can’t give up like this.
“Teach me magic, Demon King.”
[…What?]
I will become strong once again.