I'm already obsessed with 404, he's the type of monster/creature I'm into 馃い
i love me a mysterious creature
What I'm wondering about is, WHY does the company wanting them to leave? Considering the huge locked door they have, wouldn't they want the monsters staying so they could study them? Do they own this hotel? Maybe they want them to leave so they could bring them back to the facility they were held at? God, the lore to that could be anything!