MTL - Urban Young Fairy - Chapter 17 give it to you

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

After his tragic life ended, Aleron expected to reincarnate or transmigrate, but instead, he was transported with his body and summoned as a hero...only to enter a new hell as he had trash stats and couldn't activate his Divine Blessing, prompting the King to extract his boon.He was tortured and onward to being buried alive with his soul ravaged after they removed his Divine Blessing. But all was not lost as Aleron found he had the Ultimate Gacha System at the death's door and initiated his first summon in the Lords of Arcane banner.[Congratulations! You have summoned Darzax the Graveborn, the Sorcerer of Death and Necromancy.]

This was a fragmented and disorganized world, this was a place that had been forgotten.

Every player had the same starting resources.Everyone could choose to explore 10 rooms every day. One room could be dangerous while the other might contain resources.Players must do everything they could to survive.After he finished reading the instruction, Li Zheng heard a voice next to him. “Selecting a random daily reward…”“Congratulations. You have obtained a silver chest that contains a silver-grade blueprint for the Ordinary Detector, and a few other resources.”“Congratulations. You have obtained a bronze chest that contains a bronze-grade blueprint for the Air Purifier, and a few other resources.”“Congratulations. You have obtained a platinum chest that contains platinum-grade blueprints for the Ionized Knife, Intermediate-grade Genetic Cultivation Liquid, and TJP Shield, and many other resources.”“Congratulations. You have obtained a hyper legendary chest that contains…”Li Zheng looked at the colorful chests in front of him and grinned.