I Became a Pirate from Demon Slayer Squad?

(1V1) cp is Ace₍˄·͈༝·͈˄*₎◞ ̑̑ The writing is average, the characters are OOC, please lighten up, this novel is mainly written for fun (◦˙▽˙◦) His name is Yue Jian Xingche, and he is the last soul to crawl out of the blood sea of the Demon Slayer Corps' corpse mountain. After killing the ghost king, he died of exhaustion, but when he opened his eyes, he fell into a blue sky. The Moby Dick of the Whitebeard Pirates accommodated a fourteen-year-old boy who was covered in death and scars. Here, someone healed his pain with a steady blue flame, and someone melted the ice in his heart with a smile as hot as the sun. He once thought that he was a rootless duckweed, until the man who was like the Emperor of the Sea reached out to him: "Be my son!" When the call of "Little Star" sounds again, the shadows of the current life and the crises of this life follow one after another, How will Yue Jian Xingche hold on to this hard-won warmth? And when he grasped the Nichirin Sword again in order to protect his new family, Is it the final form of the starry breath that burns, or is it his star-like heart that shines for only one person?