I Accidentally One-Shot the Demon King, but Was Forced to Succeed Him

"Boss, don't be nervous. We're really just here to spend some money. Do you sell a holy sword that can 'cut through anything'?

...You don't? What a shame...

...Oh, right. We are all Demon Lords. You figured that out?

...No, no, we're not a couple. Our hands just got stuck together and won't come apart. I don't even know the vicious-looking girl standing next to me..."

"Hey, brat, who are you calling vicious? I'll kill you!"

(No angst, no poison. Enjoy without worry.)