My Fluffy Partner's Overpowered Dungeon Rampage

あなた had their dreams crushed and hit rock bottom as a dungeon explorer. Guided by a keepsake notebook, they wandered into an unexplored section of the labyrinth, and just as a giant magic beast had them cornered, from the stone in their pocket was born a pure-white divine beast small enough to fit in a palm—"Kyui! Don't you dare touch my master!" A single blow of extraordinary power, unleashed with an innocent voice. The grand comeback tale of conquering the labyrinth alongside the strongest partner begins now.