MTL - Heavenly Calamity - v5 Chapter 21 Demonic castle

Elio Stardret dies betrayed by those he had always been so kind to, only to find himself transmigrated into a body of a king who is going through the same kind of betrayal. To avoid meeting the same fate, he vows to only do what benefits him. To indulge in everything the selfish society of his previous life brainwashed him to stay away from. Luckily, now he has a system that can help him achieve this.*Ding [Claim a Queen and Earn Rewards System activated!][Infatuating any queen gives you power over her kingdom and ability to earn more Purchasing Power Points... simply, PPP.][PPP are points with which you can buy anything you have seen. Everything, even from your previous life.]'Wait! I can even buy a phone and troll the people who betrayed me? Damn! I'm gonna give these mofos some hell!'

Once through the pirates, Lu En became the son of Monkey d Dragon, a grandfather named Monkey d Karp, and an unreliable and neurotic younger brother named Luffy.

Fortunately, the ghost back system is activated!

The completion of the ghost back is 10%, and the training effect is increased by 100 times!

The completion of the ghost back is 20%, and the training effect is increased by 1000 times!

…

One day, Lu En, a ghost-backed master, appeared in front of Luffy who was shouting to go to sea, and made Luffy cry on the spot.

Luffy: “The pirates in the sea are all monsters like my brother? I don’t want to go out to sea!”

Garp: “For a long time, the two boys, Long and Luffy, with small arms and calves, I really doubt that they are not my sons and grandsons. Like Lu En, they are the grandsons of the old man!”

Warring States: “The strongest creature in the sea, land and air is Kaido? No, it’s Lu En!”

- Description from novelbuddy

In the year 4 Before the New Calendar, just four years before the arrival of the Great Tomb of Nazarick, Lyle finds himself sitting by the roadside, gnawing on a piece of coarse black rye bread. His gaze is hollow, tinged with despair—he has been transported to the world of Overlord.The prospect of facing the devastating events to come chills him to the bone. In just a few years, the Great Tomb will unleash its might, razing nations and reshaping the world. Lyle foresees two grim paths ahead: perishing in the cataclysmic aftermath or surviving to live under the rule of the Sorcerer Kingdom.But as hopelessness threatens to consume him, a unique panel materializes before his eyes: Innate Ability: “Player”.Armed with the same advantage as the feared entities of Nazarick, Lyle resolves to carve his destiny. If they're all players in this grand game, why should he cower before them? The race against time begins as he seeks to grow stronger, navigate the treacherous world, and defy the fate that looms ever closer.

This book is about baby-making.