Trek Although Bachi isn't technically wrong, the thing that was nerfed was his most fun ability, the 7 strength fruits. He became incapable of using them after a completely BULLSHIT reason only so the author could nerf him. The ability allowed him to take the strength of animals that are hostile towards humans, such as if he were to take the abilities of a wolf he would have the endless running stamina of a wolf, if he took out sharks he would have the teeth regenerating property of sharks. This ability was scrapped by author.
Even with his best ability scrapped the thing that pisses me off even more is that the author was so fucking arrogant as to pretend what he did fit with the story, he completely destroyed the character of the MC by doing this. Imagine reading Library of Heavens Path only to see one chapter the MC decides to start raping 12 year old girls and then decides that he no longer needs the libraries ability to see flaws, only its ability to collect books. That is the level the author of CoBI went to.