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As we made our way back home, I began playing around more with the {Inventory} Ability, and discovered that by concentrating my mind into the corpse of the Great Tusk, it was possible to dismantle it instantly into parts inside of it. I was able to easily dismantle the bones, meat, organs, tusks, fur, and the big-sized magic crystal it had.
"It is a bit bloody, but this is the Great Tusk's Magic Crystal…" I said, once we arrived at the barn where the horses were sleeping, we decided to make this place our hidden place to do magical stuff.
"Perfect, it is big and red-colored, it has a ton of mana, and unlike Hollows, it has little corrupted Mana too! Maybe we should go hunt more monsters later." The Great Spirit nodded. She seemed awfully happy about this.
"Err, maybe later, once we grow stronger, Great Spirit." Mark said. "More importantly, how does this Magic Circle process goes?"
Check "The Protagnist's Sister Is Actually the Strongest"!