The only information Louis had about this world from 666 was that there were monsters here, that this world contained many more miniature worlds within it, and that the protagonist of this world wasn't by his side right now.
He asked 666 how he was supposed to find the protagonist, and it immediately told him to look for the strong and special ones. Moreover, he should interact with as many people as possible, because sometimes the soul fragments weren't entirely on the protagonist. Just like in the previous world, although Luna and Lucas were both protagonists, they didn't have the soul fragments on them either.
Got it, got it. In short, even protagonists came in varieties: this protagonist, that protagonist.
At this moment, Louis and the group of people destined never to be that protagonist stepped into the haunted house.
Like one colleague said, whether day or night, everything turns equally dark once you enter a haunted house.
