Rakuin no Monshou - Volume 12, Chapter 7: Iron Mask

Silas Greenfield, a master assassin, dies in a bloody betrayal — only to wake up in the body of a random extra in a fantasy world straight out of a game he used to play. But Silas isn’t here to follow some prewritten plot. With his deadly skills and sharp mind, he’s determined to rewrite the rules and carve his own path.In a kingdom full of power struggles, royal intrigue, and dangerous secrets, Silas must navigate a world where everyone has their role — and he’s ready to break them all.Can a former assassin outwit fate and rise to power, or will he become just another pawn in a game he refuses to play?

The celestial celestial beings who lived for more than 100,000 years were born and reborn in a small monk in a human world.
His motto: “It’s not as good as a medicinal medicine for ten years of hard work.” “Even if you practice a copper-iron bone, it’s not enough for my soldier’s attack.”

- Description from Novelupdates

《Live Action Murder Mystery》Case File:

He called me his ruin. Then he made me one.Alpha Shiloh's rejection wasn’t just a scar—it was a betrayal. He left me shattered. Broken. And I had to rebuild myself in silence.I almost forgot the way his touch once burned like salvation.Now he’s back.Not to beg forgiveness. To bargain. A deadly mission, he says. He promises freedom.But then presence ignites my wolf into a frenzy. She thrashes, desperate to claim him again. But I remember the coldness in his eyes when he exiled me. The way the pack turned their backs as I crawled into the wilderness, half-dead and wholly broken. Hate simmers hotter than desire.Yet here I am, bargaining with the devil who shattered me. Every moment we share is a lie. He doesn’t know about the shadows I’ve fed, the truth I’ve buried.Or the child.One whisper of its existence, and the pack will paint the forest with my blood.But the closer we get to completing his mission, the harder it is to hide… from him, or from the part of me that still craves him.Freedom has a price.So does vengeance.And I’m not sure which will destroy me first.