Heretic Doctor Useless Consort - Chapter 27: Vermilion Bird God!

Eight hundred years ago, Zhang Ruochen, the son of Emperor Ming, was killed by his fiancee, Princess Chi Yao.

Eight hundred years later, Zhang Ruochen came back to life, only to discover that the fiancee who once killed him had unified the Kunlun realm and opened up the first central empire, known as “Queen Chi Yao”.

Empress Chi Yao – ruling the world, she is powerful in all directions; youth is eternal, immortal and immortal.

Zhang Ruochen stood outside the ancestral hall of the emperors, looking at the statue of Empress Chi Yao, with a raging flame of hatred burning in his heart, “When I rebuild it for thirteen years, dare to call the empress to Huangquan.”

- Description from novelbuddy

A 30 year-old construction foreman and company worker, Satou Tarou dies from an unexpected accident. However, he receives a cheat-like ability from a god-like existence which allows him to cast healing magic and the knowledge to produce potions.

Using his newfound powers within this new world, Tarou accumulates a surplus of wealth and changes his name to Tauro. Setting his sights on the pleasure quarters of this parallel universe, perhaps the beginning of a new legend is on the rise….

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.