MTL - Harry Potter’s Book of Sin - ~ The dawn of "Hogwarts"

❗[Current Writing Contest-WebNovel Spirity Awards 2025 Fantas]❗Flain grew up in a futuristic world. When he was born his parents didn't want him because he didn't live up to their expectations and so he ended up very badly.Flain was employed as a slave. He was forced to mine radioactive iron deep in the mines. It was drilled into his head that he existed only to obey orders.Young Flain was obedient. He doubted some of it but knew nothing else. For years, he never saw a single ray of light; light was only spoken of among the others as a legend.The routine was the same: in the morning, he would take a nutrient tablet and water. Then he would mine all day, sleep eight hours, and repeat.Flain worked like this from childhood until he was ten years old. He even found a friend, but that friend died of radiation poisoning right in front of Flain. Flain couldn't stop mining. He kept mining with tears streaming down his face.Before bed, Flain cried. “I will become the strongest. I will kill you all, and you will become my slaves.”Flain stopped crying, stared blankly at the rocky ceiling, then looked ahead. A manic grin appeared on his face, one that would often adorn it from that moment on.At the age of ten, Flain was assigned to a military camp due to his endurance in the mines and his survival against radiation.In the camp, Flain was trained. The regime was much looser; he even had an hour of free time each day. However, Flain didn't make any more friends. Even during his free time, he trained with a smile. He would achieve his goal at any cost, even if it meant training himself to death.Experiments were conducted on Flain. He lost his hair, two long gray arms grew on his back, and a third red eye appeared. Flain became a mutant.Flain was then sent to war. He fought with sharp katabas. He performed quite well in the war, earning himself command of ten soldiers and becoming a small commander.But one day, everything changed.Flain then dies, is swallowed by darkness, and Flain refuses to die, thus appearing as a skeleton in a fantasy world.

Awakening to a post-apocalyptic world infested with zombies and mutated monsters, Alex makes a startling discovery: he possesses a system that grants him access to unlimited resources every day.【Congratulations, you've received unlimited bottled water.】【Congratulations, you've received unlimited 9mm bullets.】【Congratulations, you've received unlimited cold medicine.】...With each system notification, Alex's chances of survival soar while others struggle to stay alive.As everyone else fights for their lives, Alex finds himself living in luxury, residing in a lavish mansion where he leisurely sips red wine and savors grilled delicacies amidst the chaos of the end times...

The heck? l got reincarnated as a prince in another world!I have a system as well?[Choose class][Fiend Or Human Class?]Fiend Class.Choose the class from below.[Milf Manic][Blood Kin Copier][Plunder Sucker][10X Milk Man]Yeah I choose to become the strongest!On the other hand, why is my maid so cute?“My prince~ not there!”

Three years ago, in the land of Reinbulk, a Legendary Hero was summoned in the Kindom of Leezalion and he succeeded in repelling the Demon King. Now, five students are summoned back into Reinbulk by the Kingdom of Luxeria to fight against the Demon King and the demon army. Unlike the other heroes, Yashiro Yuu has no magical affinity and the Luxeria Kingdom has no intention on acknowledging his existence or returning him to his world.