Reborn As An Evolving Monster

In a world of Monsters and Mythical Creatures, he was reborn. Not as a Human, but as a Monster. 'So you're telling me I can't leave this place?' [You must first clear the Dungeon's Ten Floors.] 'Only then, will I be able to check out this new world?' [You must build your strength.] 'By using my “Devourer” and “Evolving Monster” Unique Titles, huh?'