The light had already passed through the Gates of Hell, where it encountered a massive black river up ahead.

This was the Acheron River, the river of pain.

The ferryman, Charon, was responsible for transporting deceased spirits across the river, but a fee of one silver coin had to be issued. Otherwise, the deceased spirits would be forced to wander on the banks of the river of pain for all of eternity, unable to find a home.

Charon was already very old, but he didn't want to give up this lucrative job. Right as the silver light began to appear in the darkness, he habitually declared, "One obol... "

Boom!! 

Before he even had a chance to finish, he reflexively ducked down as a terrifying aura swept across the heavens, completely ignoring him.

One minute passed, then two, then three... Charon finally stood up again. He was wearing a tattered grey cloak that concealed his facial features, but two violently trembling scarlet netherflames could be seen beneath his hood. In his panic, he had even dropped the oars of his boat into the river.

"What was that?" His voice was trembling as he sat down heavily onto his boat before frantically scrambling towards the boat's stern, trying to get as far away from that fearsome Yin energy as possible. "Th, this isn't Yin energy from the Argosian Underworld! On top of that, they didn't take the path for esteemed guests! Th, th, this is an invader!!!"

His terrified voice echoed across the surface of the Acheron River, and he suddenly noticed that a Hell's Note had appeared on...