One Piece: the Arrival of the Demon God

As a person who can only eat one fruit, how can Will, who has consumed the superhuman fear fruit, overcome the limitations of the fruit and unlock new skills? Like elementalization? Or rebirth with blood? Space movement? Heaven and sea? Travel to the past? Imprisoned for immortality? Invincible golden body? Kill with one hit... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.