MTL - I Have a Random New System Daily - Chapter 2924 this is?

In the tribal farming era, the world was vast and unknown. Upon continuous exploration, the people of ancient times were appalled to discover that in this world, where the sky was round and the earth was square, all sorts of miracles had befallen them. There were even figures like an ultra-big ten-thousand-foot giant, as well as huge intelligent beasts that had mysteriously appeared, trampling upon the mountains and rivers, and shattering the earth. Hundreds of years later, in such a dangerous environment, people fought against the huge beasts and finally established the glorious Sumerian civilization. On this day, a wise giant suddenly made a complete descension on earth, trampling on all the mountains and rivers, and wiping out the entire nation. The world crumbled, and city-states collapsed; had the gods descended to condemn the people?

“I’m sorry, you’re all just ants living in the orchard of my yard and you are just scrambling all over the place. If I were to accidentally pass you by, I might just accidentally trample you all to death. That’s it for you.” So first, I’ll set up a sandbox in my own yard, a base area for plotting farmland. Then, I will shepherd the human race and various worlds in my sandbox.

*Fast paced fast slapping modern novel*Jiang AiLin, known as Miss Fox. Why was she called as Miss Fox? It's because she had killed someone while pretending to be the only daughter of the famous Jiang Family.It turns out, from a young age she was pretending to be the daughter of Jiang Family. When her identity was revealed, instead of apologizing she burned the whole house of the Jiang Family, causing for someone to be killed inside the fire!Heinous! Heinous! Everyone in Beijing had at least heard of this story once, especially the socialites who look down on her for being a Foxy woman whose true self was merely filled with hatred.But that woman had walked out of the prison after serving for six years.And... And she had caught the best bachelor as her lover! The eldest son of the Li Family, Li ZiChen.But she didn't come alone. She had came back with a revenge plan, to pay blood with blood.Yet why does this man knowing the people she had killed still agree to love her?!

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Then placed into a high-school setting, Lin Yi is tasked by the chairman of a top-tier multi-billion company with bodyguard duty for non-other than his own daughter, a certain little Miss of said high-school.

His enemies, once ranging from drug lords, mafia bosses, political figures, and national leaders, are soon replaced with spoiled kids who happen to have rich papas and mamas, and Lin Yi finds his intense expertise and high-threat skillset misused, and very underwhelmed…

But he does get a harem cast as diverse as his old enemies, so Lin Yi decides that, for the sake of messing around with girls as an invincible entity in a down-leveled environment, leaving his bloody and death-filled war days behind is something he’d definitely want to strive for.

- Description from Novelupdates

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