The Extra's Supremacy - Chapter 6 - 2 years - A Shadow Unseen

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

- Description from Novelupdates

The village girl who was close to death from illness was about to marry, and her suitor was a strong and hearty hunter.Having time-traveled to a poor and backward mountain village, she had resigned herself to the lack of three square meals a day, but was her new body already halfway into the grave? What's more curious was that someone still wanted to marry her despite being on her deathbed?Driven by curiosity, she went ahead with the marriage, eager to see who the unlucky sap was who'd lose his betrothal gifts and even the coffin money.Cradled in his arms, her body was thin as a rake, and she really wanted to ask him, “Husband, does holding me hurt your hands?”

Ding![The Host has died!]A system message popped up in front of Nell's body after his last dying breath.Ding![Dark Evolution has been activated to absorb the death essence of the host.]And then he opened his eyes to find himself in the past right before the battle started.'Ah! Am I back to the past?'Ding![Please choose a partner to start the Dark Evolution process.][Partner Condition: Must be a living creature from the Monster category, not the Human category][Partner Gender has to be Female.]'Partner? A monster?'Nell's heart pounded in his chest, and he felt a cold sweat coming on.'A female monster?'

Elena, who spent her entire life as a cold-blooded female knight to avenge her family, ended up dying without claiming her revenge. When she opened her eyes she found that she went back into the past. By day she was a lady in a dress, and at night she carried a sword to change history and prevent her family’s destruction.