Overpowered Demon King's Easy Life

For a millennium, Yi Ji-Hyuk fought, killed, and reigned as the undisputed Demon King across an entire fantasy continent. His ultimate goal? To finally die. After obliterating half a world and breaking through dimensional barriers to get home, he found his escape, only to crash-land back on a very different modern Earth. Now, Yi Ji-Hyuk just wants a simple, quiet life—maybe even find a way to end his accursed immortality. But Earth is infested with monstrous creatures and flashy \"superpowered humans\" who think they're hot stuff. They have no idea the grumpy, cloaked man wandering the streets is the apex predator of another reality, whose \"peaceful retirement\" involves complaining about asphalt and trying to buy a cola. When a city-threatening monster interrupts his quest for a vending machine, the real challenge won't be killing the beast, but convincing the authorities that all he wants is a quiet retirement... and a refund for his expensive soda.