I can return to the age of mysterious - Chapter 30 - 0 in hand_1

As the number one pill alchemist of the immortal world, Mu Chen had always believed that it was because he had single-mindedly focused on concocting pills that led to him to neglect disciplining his disciple. Which in turn, caused his disciple to be led astray by the seduction of devil cultivation, leading to the three realms to fall to disaster. After his rebirth, Mu Chen resolved to properly teach his disciple, give him the very best resources, earnestly love him, carry him close to his heart, teach him by way of example, and didn’t let him grow corrupt.

mc gets transmigrated to Fallout New Vegas with the merchant system. let the questionable adventure begin.

[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 ..]

One day a young man found a mysterious door in his grand father house and that door transported him to Tensura....welcome to the new world...all the credit for the characters and main story goes to the owners, this is just a fanfic none of the characters or the storyline belongs to me...Tensura won't be live until later in the chapters, so if you in a rush, you can quick rocks...