How Did I Become a Femme Fatale?!

...Only after Chu Tiange died did he learn that he was actually the older brother in a legendary forbidden romance between a man and his sister-in-law. His beloved younger brother wasn't even related to him by blood, and not only squandered half the empire he'd worked so hard to build, but also cuckolded him in a way that would go down in history. In the end, the brother even dug up his long-dead corpse and ground his bones to dust. Chu Tiange: ...Where did I get a wife? . When Chu Tiange opened his eyes again, he had returned to the moment before his death in battle. “Congratulations, Master! You've successfully bound yourself to the Calamity System! By absorbing an emperor's fortune, you can defy fate and change your destiny!” [As expected of Master, you're a natural calamity! The emperor's favor for you is already maxed out!] [Master has a talent for dancing?! Enhance it immediately! Dance to bring the world to its knees!] [Make the emperor light beacon fires to summon his lords for you? Master, your mastery of being a calamity far surpasses mine! Far surpasses mine!] . Chu Tiange: ...W-wait, I'm a warlord who rose to power in a chaotic age. How am I a calamity?! * Reborn into a new life, Mo Lanling, an emperor of the ages in the first half of his life and a tyrant at his peak in the second, has gone quietly mad. He sees the darkness in everyone's heart and knows exactly how to use them. Not even a dog can slip out of his control without permission. Unfortunately, his older brother and sister-in-law are childhood friends, have stood side by side through a chaotic age, and love each other through life and death. There's no room for him to intrude. Mo Lanling has made his peace with it. . But that damned calamity has shown up again! . Mo Lanling clutches a memorial tablet and weeps: “Older brother, is falling for the same man our shared fate?” Chu Tiange, clutching his waist and weeping: “What do you mean, ‘falling for him’? You both fell for me!!!” . #You're my moonlight, and my cinnabar mole, too# Chu Tiange: ...Our Chu family really is doomed, isn't it? QAQ . PS: A thoroughly straight, Chinese-style incubus, dramatic bottom x an extreme brother-complex, scheming, alluring ghost of a top. The top is reborn. 1v1, happy ending, fake incest. . #Never thought I'd end up cuckolding myself~# #Some older brothers look imposing and cold on the outside, but in reality, even a touch on the back of their hand from their younger brother makes their legs go weak.# Theme: When you were young, you made countless grand vows: to give the world a heart, to secure the people's lives, to continue the teachings of the sages, and to bring peace to all generations. But later, to your great sorrow, you discovered that you were merely an ordinary person with everyday needs and human emotions. Still, you did not give up on putting your vows into practice, nor did you deny the naive ambitions you once held. Grit your teeth, keep your feet on the ground, and continue onward. That is enough.