MTL - Unparalleled Emperor - Chapter 3860 35 heavy days

Reincarnated into a land of cultivation, Yuan Zhou uses his Earth knowledge and assumptions to become a genius under the heavens for both business and cultivation. However, he walks the path of defiance, exceeding all rational cultivation bounds. His business ideas struggle against the stagnant culture that pervades the land, but the things he doesn't lack are his drive for immortality and power.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

In the beginning, when they all thought that she was “he”….

ML #1: We will be brothers for life!

ML #2: This time I’ll reluctantly let you have the #1 seat.

ML #3: I will properly repay royal teacher!

ML #4: Ah Rong is my closest little brother, I trust him.

Afterwards…

MLs: I’m seriously such a fool.

MLs: What do I do, I think I’m gay. I fell in love with my bro/rival/teacher….

Afterwards….

MLs: I’m straight! As straight as steel!

Note:
MC is a girl crossdressing as a boy, she knows how to fight, and naturally possess the gold finger halo from the author.

All the ML(s) is the same person, 1v1, sc, HE

- Description from Novelupdates

[Warning: Mature Content and a ruthless, villainous, badass mc!]Kael Draven was once the feared leader of an underground mafia empire. A shadow ruler who pulled the strings behind the scenes.But power comes at a price. Kael learned that the hard way when a bullet pierced his ear, and his trusted ally betrayed him, bringing his life to an end.Bang!As his empire crumbled and his body hit the cold floor, all he could think was, ‘What a pathetic way to go.’Instead of hell, Kael woke up in a far more dangerous world, with a body stronger than ever—youthful, shredded, with muscles for days and an ego that could crush mountains.His title? Master of the Crimson Maw.He now led a bandit group that had angered a mysterious force and been wiped out—except for one survivor: a strong, silent gladiatrix who wanted nothing to do with him.To make things even more interesting, his body bore a glowing tattoo that whispered in his mind: “Bond. Through body. Through soul.”But Kael wasn’t one to back down. He didn’t like losing.So what if his base was a dilapidated shack? So what if his army was just one extremely voluptuous warrior?Kael wasn’t here to play small. He was going to turn this ragtag bandit group into a force feared by all, with a harem of deadly beauties who would bow to no one but him!Welcome to the Crimson Maw. Where the training is brutal, the beauties are overpowered, and the only thing more dangerous than an enemy is the bandit king himself.Let the grind begin!