They eventually reached the River Styx, where they met the ferryman, Charon. He was a gaunt and skeletal figure, with eyes that glowed like embers.
"Welcome, travelers," he said, his voice like the rustling of dry leaves. "I will take you across the river, but it will cost you."
Arin, Liana, and Jax exchanged a glance. They knew that they had to reach the other side, but they were also aware of the dangers of the Underworld.
"What do you want?" Arin asked, his hand on the hilt of his sword.
Charon smiled, revealing a set of sharp teeth. "I want a memory," he said. "A memory from each of you. A memory that you will never get back."
Liana's eyes narrowed. "What kind of memory?"
Charon shrugged. "It doesn't matter. Just something that you will miss. Something that will make you remember the cost of crossing the River Styx."
The three of them exchanged a glance, and then nodded. They were willing to pay the price to reach their goal.