In Naruto: Reborn With Talent - Chapter 14 - Ch14. Tsunade Senju, the Sannin 2

This is a world that has been captured by the rules of horror.The chosen ones become players and enter mysterious dungeons.In the dungeons, players receive special skills that help them in the game.Bai Liang was also chosen, but his skill is different from the others.【Stubbornness: When you die, you can stubbornly claim that you are not dead and immediately resurrect.】【Lawless Outlaw: You can disobey the rules, and others will not be able to do anything to you.】【Everything for Me: When a mission fails, one player is randomly selected to die in your place. After completing the mission, you receive half of the reward of all survivors.】【Chronograph: After entering the dungeon, time slows down for everyone, and you can move secretly.】【Switch to “Idle” Mode: Activate idle mode, and all your tasks are transferred to other players.】【Quick End: The mission ends automatically, the rest of the players are eliminated.】

Fate had never been kind to Ji Ning. Wracked by illnesses and infirm his entire life on Earth, Ji Ning knew early on that he would die as a teenager. What he didn’t know was that there really was such a thing as life after death and that the multiverse was a far larger place than he thought.

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

Having a rough life growing up, Wang Tong had numerous dreams of living a better life. However, his alcoholic foster father sells him off as a space settler of the distant planet Norton for some pocket change. Soon after his arrival, the Zergs overran the planet and obliterated its defenses in a matter of minutes. What awaited Tong on Norton was more than just an unbearable environment – its gravity alone was five-times stronger than earth – there were also swarms of bugs, constant hunger, thirst, and desolation.

While he lives a year of total carnage and survival, humanity’s Confederation eventually overcomes the Zergs on Norton and the powerful survivor Wang Tong is given a recommendation to a once famous, but now dying military academy where he begins his life anew.

- Description from Novelupdates