MTL - Harry Potter’s Book of Sin - Chapter 2623 just ahead

“Do You Believe In Magic?”Cha Jin-sung, a nineteen-year-old web novelist, is stuck in a rut after his popular story, Tales of Heroes and Demons, is abruptly cancelled. Battling with his failures, he receives a cryptic message from an unknown reader, offering him the chance to complete his unfinished story. But in a surreal twist, his response to the email leads him to an extraordinary situation—transmigration into the very world of his novel.In Meltonia, a fantastical world filled with mana and strange powers, Jin-sung now inhabits the body of a seemingly insignificant character, Kaiser Vanguard, who was written into the story out of pity.Jin-sung, now Kaiser Vanguard, uncovers a chilling realization: he must survive the events he wrote into his novel. With his soul merged with Kaiser Vanguard’s, Jin-sung must navigate the hostile landscape of Meltonia, where the stakes of his story have become all too real.As he struggles to survive and understand his transmigration, Jin-sung's main goal becomes clear: to finish the story he once cared for so deeply, now that it’s no longer just fiction—it's his reality. However, whether he'll be able to navigate the dangers of the world he created and reach a satisfying conclusion remains uncertain.This new journey will test his wit, survival instincts, and desire to complete the tale he left behind, all while facing the possibility of an ending far darker than anything he ever intended.

Qin Chen was transmigrated to the Taiyi Holy Land where he became a servant in charge of sweeping the floor. However, on his 16th birthday, he was rewarded with a system where he was rewarded whenever he signed in at a new place.

When he signed in at the Empire Ruin, he was rewarded with the strongest Chaotic Holy Body and the Chaos Emperor Scripture.

When he signed in at the Demon Sealing Land, he was rewarded with the Probationary Royal Armies.

When he signed in at the Alchemy Palace, he was rewarded with the Divine-grade Alchemy.

When he signed in at the Herb Garden, he was rewarded with an Immortality Elixir.

When he signed in at the Empire Palace, he was rewarded with the Emperor-grade Divine Art, Revival.

…

Qin Chen thought he could just spend the rest of his life signing in at different places until he became invincible.

However, when the ruin of the Great Kingdom appeared inside the holy land, people from other holy lands, prestigious families, and even ancient empires gathered to defeat the All-Powerful Demon King who appeared with the ruin. The Demon King had killed countless people and had planned to destroy the Taiyi Holy Land.

Qin Chen was left with no choice but to step up. When he killed the Demon King with a single slap, he sighed, “Why do you guys have to force a mere servant to act?”

He is the ruler of the mercenary realm, an overlord that gives headaches to the leaders of any country! For the sake of his friends, he’s willing to sacrifice himself; for the sake of his family, he does not hesitate to spill blood! He is a dragon, one that soars above even the highest of heavens. He’s a power that advances triumphantly through unstable situations, stirring up both the winds and the waters.

- Description from Novelupdates

I have experienced all the eight sufferings of this world.

I do not ask for nirvana, but for you.

Wild and hard-to-tame demon (gong) x cold, ascetic and childish immortal (shou)

- Description from Novelupdates