Reincarnated as a demon inside a dungeon - Chapter 38

Four years ago, the first-ever Armageddon Class Anima appeared on Earth, destroying everything that it touched and threatening the lives of the entire world's population! But along with it came Superhumans that had the blessing of mana. They rose up to fight against the Armageddon, and leading them was the strongest Superhuman, KING.After two days and three nights of nonstop battle, KING gave his life to stop the Armageddon and give the Superhumans a fighting chance against the invading Anima, and everyone in the world remembers his good deeds and sacrifice!...Mark was just an average Superhuman living in City A. His daily routine was skipping classes and hanging out with his only two friends while hunting for Anima in secret whenever he could. But this easy life was not going to last for long as the hidden power he sacrificed a long time ago began to awaken once more![Initializing Superhuman System...][Recognizing Host... Host Recognized.][Parsing Constitution. Host Fully Healed. No Traces Of Residual Damage.]“Hello once again, Mark Vanitas. Has it already been four years?”

After transcending to a new world, Ye Xuan miraculously obtained the Swallowing System.

Not only could it swallow everything (wink wink nudge nudge), it could also extract bloodlines, martial arts, godly weapons, medicinal pills, treasures…

“This (beer) is way too strong! Don’t challenge me! Do you believe that I can’t swallow your divine swords?”

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.

Tessy Brown, an only daughter of her parents, was treated badly in her marriage, but forced to endure all the ill treatment for the sake of her father's business. Three years down the line, her husband presented her with a pre birthday gift — his ex girlfriend, who he introduced as his new wife. Heartbroken and shattered, Tessy accepts divorce and gives in to her drunken desire, having sex with a complete stranger she met at her workplace.That single encounter changed her life forever, opening her to a world she never knew existed, and a life she never would have believed she lived in the past.***Cursed to abhor the touch of a woman after the death of his mate, Roman Gavriel, the Lycan ruler of the entire werewolf communities and a revered billionaire in the human communities, lived a long life of ruthlessness and loneliness.Already resigned to his fate, he decided to test different ways to end his miserable life. When one of his experiments successfully knocked him unconscious, he landed in the hospital where he felt the touch of life that aroused all of the feelings he thought he had killed and buried.At that moment, he knew he was never letting her go, not for anything or anyone in the world.