Backpack

He is a backpack that Makoto carries and can speak human language. When exploring a dungeon, he disposed of dangerous magic plants and monsters that Minato accidentally pulled out, out of sight of anyone but Makoto, and he also saved Minato when he was in a difficult situation after being knocked unconscious and chased by the enemy. He cares deeply for Makoto, and as they get to know each other better, he also grows to like Minato. He is known for his way of speaking, using expressions such as "It is XX!" and "Gero Gero. "