I, the Chosen One, a Gentleman of Jian’an!

[Chosen protagonist + major villain + empress + feel-good power fantasy + System + subverting expectations + childhood friends + lighthearted + invincible + decisive and ruthless] [Alas, woe is me!] [Jian'an is long gone, and Wei Wudi's legacy has faded into the distant past!] [Alas! Woe is me!] Also known as: 《Are You Sure You're the Chosen Protagonist, and Not the Real Villain?》 《The Villain's Sister Is Way Too Aloof》 Blurb One: Su Mu transmigrates into a good-for-nothing story. After five years of sign-in rewards, he obtains the Chosen Protagonist System. In this world, there are countless protagonists blessed with great fortune, and countless villains who have transmigrated here. To maintain peace in the world and restore order, Su Mu resolutely takes up a three-foot heavy sword. He cuts down protagonists, crushes villains, slaughters their clans, and wipes out their entire families! “Who dares claim to be chosen by fate?!” “And who dares call themselves the protagonist?!” Standing atop a mountain of corpses and a sea of blood, Su Mu challenges the world. The people murmur, but no one answers. Blurb Two: [Empress, something's not right with you!] [Chosen female villain, where do you think you're going? Take this palm strike!] [Chosen heroine, are you eavesdropping on my thoughts?] [Su Mu: I shall carry on the late chancellor's legacy and restore the glory of Great Wei!]