One Piece and the Straw Hat's Journey

The genetic factors of strong humans and Neptune-like overlords, plus a little bit of Devil Fruit wavelength exposure. In a certain attempt that no one had any hope for, a miraculous child was born that even Vegapunk, who was 500 years ahead of the world in wisdom, could not reproduce. It was an evil beast, like a dragon or a snake, with a ferocious head and horns, hard scales, and a bony armor and stomach, and it was wrapped in lightning and wandering in the air. (Animal form) It was a demon, about 6 meters tall, standing upright in human form, holding a thunderbolt in its hand, crushing everything. (Human-animal form) That was Alan, a handsome boy with black hair and golden eyes, a miracle son born in the laboratory. (A user with pseudo-devil fruit abilities cannot use their abilities after falling into the sea, but they will not be completely incapacitated) I'm not good at introductions, but it's actually the story of a little monster with a gift, traveling with the Straw Hats, growing up together, and shocking the world together. PS: I wrote this because I like One Piece. I basically have no ill will towards the characters in One Piece. I don't particularly dislike any character. I admire those characters who have personality and charm, regardless of whether they are good or bad. Therefore, I will basically not deliberately vilify a certain character. I will try my best to write as close to the original work as possible.