One Piece: God of Space - Chapter 6 Demon Sword Muramasa

The end of the beginning marks the beginning of a new era. Gods and demons were buried in the past, their history had crumbled into dust. As of now, twelve scriptures were passed down.

With the passage of time, during an excavation, a mysterious scroll of star map was unearthed at Egypt. As if carrying its mission, it abruptly appeared, yet abruptly disappeared. During its disappearance, a youth was brought along with it…

- Description from Novelupdates

(Third Person Limited PoV.)Betrayed by his fiancée, mocked by his siblings, and disowned by his family—that was Lev’s fate.Even when he regained memories of his life on Earth, where he realized that his world was strikingly similar to his favorite novel, it still didn’t help him change anything.How could it be?Because the protagonist of the story had already achieved his happy ending—gaining a beautiful wife and living a blissful life. Meanwhile, the world continued to move forward.What do people usually do with a novel that has ended? They tend to stop caring about the world within it, even if it falls into ruin, especially if the novel isn’t particularly popular.The world Lev Razanov lived in shared a similar fate—it was destroyed.[Hero’s System successfully installed.][Critical condition detected.][Do you wish to return to the past?]Lev was given a chance to return to a time when the story of his favorite novel had just begun.Although he was destined to become an extra villain—a pawn of the pawns serving the real villain, he vowed to end the lives of anyone who had caused him suffering: his siblings, his fiancée, the main character, or anyone else.[Hero’s System inherits your desire from your life on Earth—the desire to do good.]“Who said killing your enemies is an evil act?”

In the new era of Blue Star Martial Arts, Demons invaded, and humankind was embroiled in a bitter struggles.Chu Feng transmigrated and arrived on the scene. Armed with the ways of being an overachiever, all he wanted was to once again show the spirit of a die-hard corporate slave and carve out his own piece of the world!No sooner had he been reborn than he was smeared with demons all over his face, but no worries, his golden finger had arrived!He could draw upon the Life Force of slain Demons to transform into Attribute Points, becoming stronger with limitless additions!“What to do when there are no more Attribute Points available?”“Hey, look over there, a lone Demon…”“Sneak up from behind, grab its head, just twist like this! Hey, Attribute Points secured!”…“In this world, having great strength means having everything!”“In my life, with such heaven-defying Martial Arts Talent, do you think I can become a Martial God?”“The path to the Martial God has ended; it's become nothing but old legends? Ha, the path I walk will be the new path of the Martial God!”…This book is also known as “Demons, I Need You to Help Me Cultivate!” “So Easy to Learn, I Think This Move is Really Simple” “Run Fast, the people at the front are haunted” “This Man is More Demonic Than the Demons Themselves!”

I am merely a reviewer, albeit the products I review are slightly different. For example, I review quantum computers, artificial intelligence, anti-gravity mech armor, planetary engines, sublight colonial ships, stellar detonators, etc…