Raidorl Seiken Senki - Chapter 29: Witches and Assassins.

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

Wei Fan traversed to a world filled with Evil Spirits. Fortunately, he could kill enemies to steal their Power.Ten-year Power Golden Bell Shield: Golden Bell Body Protection, Copper Skin and Iron Bones.Hundred-year Power Golden Bell Shield: Tiger Roar and Dragon's Chant, sound echoes through the demons.Thousand-year Power Golden Bell Shield: Vajra Indestructible, sun and moon shine together.

After dumping the Obsessive Tyrant, I was entangled######[Sickly Obsessive Maxim Sinclair VS Cunning Little Fox Summer Lowell]President of Sinclair Group, Maxim Sinclair, is ruthless, unfeeling, and notoriously uninterested in women, never rumored to be with any woman.However, only he knows that the woman bold enough to come undercover beside him, achieving her goal before fleeing, has haunted his sleepless nights for an entire year!Until that day, she unexpectedly returns to the country, parachuting in as the design director of a rival company...“Director Lowell, you used me and threw me away. Did I agree to this?”“Feelings fade, naturally things end. Why must President Sinclair pursue relentlessly?”“Summer Lowell, let me tell you, even if I have to go to hell, I will take you with me!”...People gasp in sympathy, assuming this reckless woman is doomed to a fate worse than death.Little do they know, he has long laid an inescapable net, waiting for her to walk right into it.“I will trap you in a place where only I can see you, forever!”———[The Heroine is Career-Oriented, The Hero is Pathologically Obsessive, Known as the Jealous King of the Demon Capital!]

This is the story of Long Yi, who was killed because he took revenge for the girl he loved. Before he dies, a strange lightning carries his soul into a different realm. How will he live, when the first thing he noticed upon arrival is that, the man whose body he possessed is raping the country’s princess?

- Description from Novelupdates