Within a Hollow Heart - Chapter 174: Volume 2, : "Echoes of the Lost"

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

Jiang Dao died extremely heroically in the apocalyptic world war. He never thought that he would have a chance to open his eyes again.

He traveled through, into a danmei book he had read, and became a vicious villain in the book.

Jiang Dao thought to himself: “After more than ten years of fighting for my life in the last days, I’m tired, so what am I fighting for? It’s better to be a vase. Use my face to finish the brokerage contract, and then find a corner in the world with beautiful scenery and live a peaceful life of growing vegetables, cooking, and raising cats and dogs…”

So, he returned the role that the original owner had snatched from the protagonist shou on the spot.

Unexpectedly, in the variety show that started shooting the next day, Jiang Dao performed a shoulder toss and threw the current number one kung fu actor, Chu Yinlong, to the ground.

Chu Yinlong: Boy, you have successfully caught my attention. My new movie, the villain, can fight, you come.

Jiang Dao: …Sorry, I’m just a vase.

————

In a later interview.

A reporter asked Chu Yinlong: “How would you rate your perfect partner, Mr. Jiang Dao?”

Chu Yinlong replied: “A vase.”

Reporter: “How can a kung fu superstar as famous as him be a vase?”

Chu Yinlong: “Diamond vase. Precious, beautiful, hard enough.”

- Description from Novelupdates

What happens when a fanfic author with a habit of lying and scheming suddenly finds himself as a self insert during Duelist Kingdom? What happens when you have Yugi, Joey, Kaiba, and the rest encounter someone who knows all about every major player in their saga... and sees no problem with abusing said knowledge? Chaos, dear reader. Sweet, sweet chaos