My Shadow Monarch's System - Chapter 18: Regret.

Growing up in a place where the rule of the jungle is law, the simple yet cunning Shaar is thrown into the chaotic world of war and political turbulence. After a chance meeting with a mysterious young girl, his destiny is forever changed as he embarks on a journey, joining the Byzantine army and climbing its ranks. With his bizarre beauty standards, will he ever return the affection of the girls that will follow him? Will he ever learn about his real parents? What lies ahead of him is a journey of strange humor and adventure.

Zhang Xuan traverses into a foreign world and becomes an honorable teacher. A mysterious library appears in his mind. As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weakness would be automatically compiled. Thus, he became formidable.

“Emperor Haotian, why don’t you like to wear underwear? To think that you’re still an emperor, can you pay more attention to your image?”

“Fairy Linglong, if you continue to suffer from insomnia, you can always look for me. I have a way with lullabies!”

“You as well, Qiankun Demon Lord, can you cut down on the garlic? Do you want to stink me to death?”

…

This is an incredible story about the heritage between teacher and students, cultivating and guiding the world’s strongest experts.

Takahiro Nao, a 25-year-old burdened by crushing debt and driven solely by his love for his struggling family, meets a tragic end—until a mysterious Goddess of Benevolence offers him a second chance: reincarnated in another world, and his efforts there will provide for his family back on Earth. Awakening in the body of Naoki von Blackmore, a disgraced “Failed Hero,” Nao is thrust into a realm of sword and magic, monsters, and war, tasked with the impossible mission of defeating the Demon King. With newfound powers, a shadowy past, and the weight of two worlds on his shoulders, he must battle not only relentless enemies but fate itself. Blending emotional depth, thrilling action, moments of humor, and a spark of romance, this gripping isekai adventure asks: how far would you go—and what would you sacrifice—for the people you love?

[5 Spell Books][280 Spells and Rituals][Ressuration Completed[System initializing… Synchronization in progress…][Synchronization Complete][Harem Codex Initiated]Every normal thing in his life took a great turn after he Fucked the goddess of lust.This is what I was born to become 'A Monster.' They will fear me! They will crumble in my presence! My purpose is not to save but to destroy, my legacy will be remember forever...Azrael was once the kingdom’s deadliest weapon, forged in the shadows by the criminal elders and a king who demanded perfection. But when his humanity cracked under their brutal training, they abandoned him to a witch-run asylum, branding him broken and useless. Left to rot in despair, Azrael met his end in the ward—until the witches intervened.Out of pity and defiance, they performed a forbidden ritual, combining 280 spells from five ancient grimoires. Their sacrifice gave Azrael a second chance, transmigrating his soul into a new body.He awakens with a system unlike any other: a reality-bending tool granting him the ability to charm and seduce powerful women, each conquest unlocking new powers and revealing deeper truths about his own existence.In a world where women dominate 75% of the population, Azrael uses his newfound abilities to climb the ranks of society, assembling a loyal and influential harem. But as his strength grows, so do the secrets surrounding his rebirth. Each revelation pulls him closer to uncovering the true nature of the system and the conspiracies that reach far beyond his betrayal. Is he the master of his destiny, or just a pawn in a greater game?-___A/N: Sypnosis not long, but gives all it should give, before you judge, read up to the first 15 chapters and leave a review once done.....See y'all in the book.You want a wise MC? You got it!You want an MC who will turn out not to merciful? You got it!Fast paced story? You got it!Something a little bit new, and out of the ordinary? You got it!Level up of both the MC and Villain and system? You got it![Adventure, Action, R18, Isekai, System, weak to strong, Handsome ML, Beautiful FLs, Demons, Monster Girls, Beasts, Apocalypse: All Check ..]