Utsuro no Hako to Zero no Maria - Volume 4 Chapter 1

In the 21st century, she was the talented leader of the hidden family clan, once she crossed over, she became the number one waste?

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

The mid-level boss of my company’s AAA-game.

Xiao Jinghuai's home has a little thing, soft and adorable, lively and mischievous.Rather than calling her a wife, it would be better to say it's like having another daughter.Some people say: “Young Master Xiao pampers his wife to the point where she only needs to open her mouth to be fed, she's almost become useless!”“Whoever says that, throw them into the sea to feed the sharks!”Another person says: “Young Master Xiao's wife really doesn’t look that great, nowhere near as beautiful as so-and-so!”“Whoever says that, gouge out their eyes to feed the dogs!”Yet another says: “Young Master Xiao spoils his wife excessively, he has become a tyrant of his generation!”“Who says so?”Turning around, just to see the girl's bright and charming little face, “I said it! So what do you want?”He pulled her into his arms, didn't want anything, just wanted her to be his little princess...(Even in this world full of charms, I only have eyes for you.)