Upon hearing this, the male supporting character's brow furrowed slightly, clearly a bit perplexed by Logan's words. He didn't immediately speak, instead waiting quietly for Logan to continue explaining. Seeing this, Logan let out a soft sigh and began to elaborate.
"Spirit World, that's an existence entirely different from our world. It's hidden within the cracks of space, secluded by the Ancient Barrier, and only a very few know of its existence. And the distance between the Ancient Barrier and the Spirit World isn't actually far; it's merely separated by a mysterious river called the 'River of Oblivion'." Logan's voice was low and mysterious, as if he were recounting an ancient and distant legend.