MTL - Transmigrated as a Rich and Vicious Widow - ~ Work related

I, Zatiel, Abyssal Lord, Ruler of Death and Destruction, Nightmare of Dys, have AWOKEN!!!!!.

His life contains events that can shake the universe:
-Fighting against Tiamat, Creator of Evil Dragonkind, in the first circle of hell, while billions of demons and devils butcher each other beneath them
-Start a World War against the Heavenly Race, and transform himself into a Golden Sun while he slaughters their greatest warriors, the Archangel.
-Enter the Final Gate and fight against the Outer Gods.
-Tearing the nine levels of Baator during his battles against the Prince of Evil, Asmodeus.

With his memories as a ruler of the Abyss and a Universal Existence, Zatiel will rise again.

Host: What is your dream?Lv Xiaobu: To eat and do nothing, to do as I please.Host: Then how did you become the world's richest man?Lv Xiaobu: How would I know? You ask a spendthrift how to make money? Really! I want to go back to sleep.Host: Please don't...Lv Xiaobu: Tip, five thousand.Host: Kneeling and sending off Young Master Xiaobu, may Young Master Xiaobu rule the world forever!Lv Xiaobu: Wahahaha!

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

Having the capability to destroy humans, elementals, and gods, after a long period of countless wars and strife, Arnos the demon lord became sick and tired of all that and longed for a peaceful world, so he decided to reincarnate to the future.

However, what awaited him after his reincarnation is a world too used to peace that his descendants became too weak due to a huge weakening in magical powers.

Arnos enrolled in the Maou Academy established to find any students that might be the demon lord’s reincarnation, but his powers are too extraordinary that those in the academy couldn’t properly judge his powers, so he’s regarded as an “Inept student”. Being underestimated and avoided by most people there, he recruited a girl friendly to him, Misha, as his subordinate and comrade, and strives to climb to the top of the demon race hierarchy to one day reclaim his former title and status.

A man in his thirties was standing in front of she-devil's grave, under everyone's watchful eyes, he dropped the flower to her coffin, his tone was full of ridicule. “Congrats on your death.”Next year he came, “I won. You lost to me and I will live well. Just rot in there.”Next year he came again, “I have a pretty girlfriend and I will marry next year. My life is good. Nothing to worry about.”Next year he came once more, “I will stop visiting and forget you! My life is better without you! See, I live well!”But he came again the next year and the years after that. People said he was hunted by his so-called arch-enemy. That even after death, the devil did not even let him go.He stood in front of her grave. His once handsome face had turned old and wrinkly.“Bei Sangyun, I cursed you. You are not allowed to rest in peace. You must be suffering there like me, right? You devil...”He might be the last one standing. But his life was the same as the dead's- lifeless and empty. He did not live well, he never once marry and his heart was never at peace.And it was all the fault of one person.*****Bei Sangyun was a big bully in high school. The target of her bullying was the skinny boy in her grade, Fei Chuan. They were classmates once in kindergarten and met again in high school.But one day, just a year left before graduation, the big bully suddenly changed.One day, Fei Chuan hesitantly opened his locker. The other night, the big bully said that she left something in his locker. He did not really want to open it. He was afraid a poisonous snake would come out of his locker. However, his report card was there. With gritted teeth, the young boy opened it.However, what appeared was not a hideous thing as he expected, but a bright pink letter with a little heart sticker as a seal.It turned out, the surprise was scarier than a snake.Was this a new form of torture?Since then, Bei Sangyun relentlessly chased the young Fei Chuan until the two got married.******This is a story of rebirth. The two arch-enemies who could not live under the same sky had become sweet lovers.