One Piece: Unreal Adventure - Chapter 5: Teach Me Something Gramps!

Corporate slave Alexander dies with only one regret—not finishing the fantasy novel in his hands. Fate has a twisted sense of humor when he awakens as Alexander Flamingo, the perverted villain destined to be expelled and killed in that very story!Armed with complete knowledge of the original plot and a mischievous “Harem King System,” Alexander plans to rewrite his fate. No longer the one-dimensional pervert of the novel, he'll use his future knowledge to manipulate heroes, seduce heroines, and rise from disposable villain to the true mastermind of this world.The system grants him power through every relationship he builds—but can this calculating reincarnator use his second chance to avoid his predetermined death and become the ultimate Harem King? One thing's certain: this story won't follow the original script.

When I woke up after being transported to another world, I am suddenly the antagonist? This script is wrong! I stole the other guy’s girl! I also have a super strong big sister! This script is even more wrong! There’s even an Overgod Space, along with the infinite worlds? I must be dreaming! Wu Ming calmly maintains his neutral expression and journeys ever onwards.

- Description from Novelupdates

Ethan Yagami, the lazy, gentle, and carefree young master of a powerful noble family, only wants to enjoy life and relax.But on the day of his awakening ceremony, the most cliché thing imaginable happens to him…[Ding! The System is bonding to you.][Bonding successful! Congratulations, Host! You have awakened: The Divine Benevolence System.][Please, Host, give more and be more benevolent.][Because the more you give, the more you shall receive.]Ethan blinks.“…So I’m basically a Saint now?”With a smile as lazy as ever, Ethan realizes his path to power isn’t through grinding or killing monsters—it’s through giving things away.Money? Skills? Weapons? Even trash? As long as he gives selflessly, the rewards return a thousandfold.And so, while the world expects a humble philanthropist, Ethan casually breaks the balance of power, amassing wealth, strength, and influence—all while doing as little work as possible.Because, after all…Why struggle when generosity makes you overpowered?

Zhen Zhen was reborn in the forest area in the 1960s with a drop of the blood of the ancient gods. The awakening of the blood of the gods not only gave Zhen Zhen one power after another, but also made her the most favored little lucky star in the family!

- Description from Novelupdates