One Piece: Supreme Check-In System - Chapter 31: Meruem Breaks the Chains of Heaven

With the ability of the King of Silver, the first king in “K”, to be immortal and immortal, he crossed into the world of One Piece. Although he became a Pirate, he did not target One Piece.

His goal is to live freely on the sea, it’s that simple.

- Description from novelbuddy

The Great Human Civilization has crumbled apart, falling into the Abyss. A hell with no escape. To survive there, some rules must be followed blindly.1: Be wary of the dead for they don't rest even in death.2: Always be on the lookout. Danger lurks everywhere in the Abyss. Nowhere is truly safe.Lastly, if you hear something unusual like a voice that shouldn't be there, do not investigate. Just run. At least then you might get to keep your life.***Kev's adult life was suddenly upended when he was pulled into a nightmarish world along with countless other humans. To survive he had no choice but to perform a ritual he chanced upon through a series of inexplicable events. The ritual promised great power. He gave in to the temptation, performed the ritual and stepped into the realm of mysticism. At the same time, he unknowingly put himself at great risk. Since the moment he performed the ritual, He faced the risk of losing his humanity or himself entirely.He didn't know then that performing the ritual demanding a great price. By the time he realized it, it was already too late to turn back.You have performed a Great RitualGained class:- Corpse Collector in the DarkTrait unlocked: esoteric mutation of the soulGained skill: shadow manipulationAssimilation rate: 0%Collect corpses to growIncrease in assimilation rate unlocks new skillThe power comes with a great pricePay it obediently like a law abiding Abyss Dwellers or risk losing yourself to the evil brewing within...

The figure of the Armada seems to be still riding the wind and waves in the Atlantic Ocean, and the gold of South America still seems to flow in continuously. As Alfonso from the Bourbon family returns to the Royal Palace of Madrid where he was born, the story begins here…

- Description from novelbuddy

Once upon a time, the Devil fell in love with one of the King’s many wives. One night he went to her room disguised as her husband and made love to her. She got pregnant with his child. Knowing this The King ordered her execution believing his wife cheated on him, but then the Devil appeared to the king making him a deal. In exchange for great power for his Kingdom, the King will let his wife Sire The Devil’s Child. The King who was greedy for power agrees to the deal and his Kingdom becomes one of the most powerful Kingdoms and the Devil’s Child, the seventh Prince of the Kingdom.