i'm having the hardest time finding this, it's a light novel where the mc is an OP kid, like it starts off with him being like 1-3 and when he leaves to adventure he's still less than 12. it's another world, there's monsters all over the place, the main character is as strong as ancient beasts of similar ages, people learn "magic" called like bone symbols, or something, from the bones of powerful monsters. he made friends with a 9 headed lion, after beating it up and eating a few of it's heads.

i would appreciate any help

And in the end, all others bowed before the might of the zorblax armies.

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