I Became the Devil Queen's Heart Demon - Chapter 1: After completing the game

Mechanics fix things.Fighters break ‘em.Those were the two truths Perry lived back on Earth. When he got isekai’d into a young noble with newfound magical powers, he found himself stuck with an awful choice. Try to survive on the Front, the mystical battleground where Hydras and Devils roamed free… Or find another way.So he took an oath. An oath that made him a Magus Dominus. A mage lord. He’d escaped his fate, least for the moment.For most his life, Perry was used to being alone. When he got sucked into Ro'an, he was suddenly thrust into the role of surrogate son to his loyal servant and half-brother to a tempestuous Storm mage. With their help, Perry prepared his best to be lord and protector for his domain. And if he fought a few monsters, and helped a few people along the way, well…Mechanics fix things. And fighters break ‘em.-Progression Fantasy with light LitRPG elements-No romance-Kingdom building and magic progression

The Jiuzhou Continent contains an era of chaos and fiendish demons, haunted by mysterious beings and fraught with feuding martial families, demonic sacred grounds, and endless struggles between various powers. Conflict is a constant throughout the world.Within such darkness, Gu Chen opened his eyes to this reality.At the same time, he discovered that as long as he slew these fiendish demons and ghosts, his cultivation strength could continually elevate.Killing a Panic Level Demon yields a decade's worth of cultivation.Slaying a Ghost Level Fiendish Ghost brings thirty years of cultivation....Eventually, one day, staring at the endless swarm of fiendish demons and world-renowned grandmasters in his path, Gu Chen chuckled lightly, “Are you able to withstand this fist of mine, charged with 1600 years of cultivation?”

Traveling through the world of pirates, Lei Luo became an outcast of the Rocks family.

He inherited the will of the D family and activated the Myriad Worlds Great Treasure System!

As long as you keep doing tasks, you can keep building treasures!

【Ding! Congratulations to the host for creating it, twelve spell pigs, with eye-catching electric eyes! 】

【Ding! Congratulations to the host for creating the Twelve Talisman Rabbit, which is extremely fast in an instant! 】

【Ding! Congratulations to the host for creating the kaleidoscope blood wheel eye, eternal level! 】

…

With each piece of treasure being built successfully.

Shields Town aboard Laylo!

Became the straw hat group, the most mysterious prop master!

Luffy: “Train in [Time Room], my fruit has awakened!”

Sauron: “I want a famous sword? Lei Luo gave me [Flowing Blade]!”

Kaido: “My animal legion was confiscated by [Poke Ball]!”

Everyone: This prop master is so terrifying!

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- Description from novelbuddy

“If I don’t die… I swear I will act on all my evil thoughts..”

Not exactly everyone’s typical thought when they’re about to die. What will a cowardly young man do when reincarnated with the evil powers to redefine his destiny? Can the natural kindness of human nature triumph over evil? Will he become the cold-blooded demon king of legend, or will he forge his own path and rain down another kind of terror?