The Demon King you're talking about? I really don't know him!
The whole continent was reborn with a guide to defeating the demons. I'm the only one who remembers working overtime to edit a PowerPoint presentation.
Mistaken for the strongest and pushed onto the stage at a gathering of the reborn, I casually say, “Let's eat first,” and trigger a hidden quest and pull the Holy Sword from its sheath! I say, “Don't go east,” and a secret realm explodes into view. I shout, “There's a plane!” and a wyvern appears and knocks out the chief judge. I flee into a cave no one can leave alive, only to end up using the Demon Lord as a pillow. I fall off a cliff and somehow become an honorary consultant to the demon race...
I pass off hot pot as a ritual for smelting in hell, use my phone camera to fake soul extraction, teach “Dedication of Love” and claim it's an ancient forbidden spell, and even accidentally help bring about the “Demon Labor Protection Act”!
Then the Demon King comes to me and says, “Please help us get an eight-hour workday!” That's when I realize the final boss is a miserable office drone who's been working overtime for three thousand years!
I help the reborn hit their KPIs with my left hand and take the demons on team-building outings with my right. This transmigrated office worker reforms the gods' and demons' workplace with a load of nonsense, and saves the world in the most hilarious way imaginable.
