My Power is Upgrading Everything (Rewrite) - Chapter 404: Handing Tasks to New Subordinates

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

【Sweetness & Bittersweetness + Mutual Redemption + Love Over Time】Xia Zhi got married to He Jinnan, with whom she had a one-night stand. He Jinnan is handsome, good-natured, gentle, and considerate towards her. He takes care of her, transfers money when she's out, and helps her deal with mean people. In every matter, he strives for perfection. Xia Zhi is deeply immersed in his love and believes she will grow old with him. Until one day, she sees the woman standing behind him, the woman that bewitches him, and she realizes that everything has been an illusion. She hands him the divorce agreement: “Let's part ways and wish each other well.” He embraces her and says, “Wife, you've stolen my heart; how can I be well?”

Struck down amid the battle, the Hero and Demon King meet their demise. As their souls linger on the edge of the afterlife, a mysterious force intervenes, merging their fragmented souls together with a new being. Rusty, the living armor, now affected by their memories and presence, embarks on his own quest. Will he seek revenge on those who betrayed the hero, or will he fulfill the desires of the fallen demon king? or instead, forge his own path?