God of Soul System(Improved)

If you're familiar with One Piece, you'll know that the protagonist is someone who was reincarnated into someone's body from the series. Who is it, and can you guess who it is? You may be familiar with the people in this tale, but you wouldn't be able to predict what would happen... Let's see what happens from here on out. All things of this world have been reduced to ashes by a raging blade-like flame. The Roja from eleven years ago acquired a Sword Soul system, which allows him to improve indefinitely and extract a variety of abilities, after crossing over to the realm of pirates during the period of pirates (which is now past). The Flowing Blade-like Flame (Ryjin Jakka), the Mirror Flower, the Water Moon (Kyoka Suigetsu), the Moon Fang Heaven-Piercer (Getsuga Tensho), and the Thousand Cherry Blossoms (Senbonzaku) are all examples of Japanese mythology. “If this blade is brought down upon you, you may be burned to death.” Roja glanced at Akainu, who was standing in front of him, and muttered something serious. This is not my fanfic; I am just enhancing it on my own initiative; the original may be found on the internet. https://translatinotaku.net/novel/god-of-soul-system/ The original author and translator deserve credit for their work.