MTL - Group Pet Little Fat Baby: I Have Four Big Daddies - Chapter 186 Doubtful source, can't tell

Each stroke of good luck is a triumph over someone else’s misfortune.Jack Grim, the son of two legendary assassins, was born and raised on nothing but coldness — and the skills to spill blood.At seventeen, Jack received his final task as an assassin apprentice under his parents.“Succeed, and you’ll run your own organization — live the life you’ve always dreamed of.”For Jack, it was everything he had ever wanted: the chance to finally become the professional assassin he was born to be.He struck his target at midnight, succeeded, and received everything his parents had promised.But in the wake of victory came a pounding headache, a relentless fever—and then… transmigration.Jack now found himself in Raiden’s body — the keeper of the Book of Ashes, the heart of the Devourer, and the very book the coward Raiden had died protecting with his life.Jack had no desire to live in another world, magic or not. He simply wanted to return to his life as an assassin.But duty had other plans. The balance of this world now rested on his ability to protect the book — and like it or not, the responsibility was his to bear.

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

If you had a chance to live again, what would you do? Earn money, hold onto a thick leg, just find someone to live a happy life with? Ha ha… Stepping on the beat of the times, riding the wind and breaking the waves, strategizing, using your knowledge to change yourself, and everything around you, come back! The reality flows to the plot, the golden fingers are thick, slow, and cool.

- Description from Novelupdates

As the executor of the Heavenly Dao, Li Suisui descended to the mortal world for a trial. Born under a celestial omen, her birthday was co-opted by her cousin, which left two girls in the Li Family with the same birthday but disparate fortunes.Everyone said Li Suisui was a harbinger of misfortune, a reincarnated curse spirit, who was fated to bring disaster to her family. They wanted to get rid of her as quickly as possible.On the other hand, Li Yanyan was a lucky star, a blessed bag, everyone wanted to latch onto her coattails, trying to rub off as much luck as they could from her.Later on, when hardship befell the Li Family, the elderly matriarch planned to bury Li Suisui alive to change their luck. But Suisui's powerful uncles came from all corners of the world to rescue her.A grandmaster illusionist, an incomparable physician, the world's top God Hunter...it seemed the Li Family had really kicked at an iron plate!Overnight, Li Suisui became the most adored and cherished member of the family.Sneering outsiders said, “Treating a harbinger of disaster as treasure, when she eventually causes all of your deaths, that's when you'll regret it!”Yet as time passed, not only did no harm befall her uncles' families, but they all began to thrive enormously.Her lame uncle regained his mobility, his barren aunt bore twins, the once discordant couple reconciled, the other uncle became the Number One Scholar... It was even rumored that a long-deceased grandfather had come back to life...