MTL - Forty Millenniums of Cultivation - ~ The enemy of Tekken (55)

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

I want Hollywood to be the Hollywood I want – Lancelot Strelow
His life was full of ups and downs, rebellious, and brilliant. No one can deny his excellence. With hundreds of millions of box office in his left hand and countless trophies in his right, even the most critical film critics have to lower their heads, let alone It is said that countless movie fans all over the world worship him, leaving an indelible mark in this era.
But, he is a bastard.
He is a complete jerk, he relies on Hollywood to become famous, but he is a rebel in Hollywood, his disgusting personality makes him the public enemy of the entire Hollywood, he unscrupulously impacts everyone’s bottom line, and he stimulates everyone unrestrainedly With his nerves, he lightly challenged everyone’s authority, and his unrestrained talent was like a nightmare from which he would never wake up. However, no one could refuse him.
You can only avoid falling in love with him if you completely loathe him – The New York Times

- Description from novelbuddy

Transmigrating into a world of cultivation, you find yourself at the lowest rung of the sect's hierarchy. Everyone wants to bully you to gain some benefits. Fortunately, there are always a few junior brothers and sisters who are 'generous and understanding', allowing you to improve peacefully and secretly grow stronger. Years later, unbeknownst to anyone, you successfully become a deity within the sect. This day, your master visits you at the sect's request.'The upper echelons of the sect believe you have been diligent and loyal over the years, and though your strength is mediocre, you are an honest person, so they've found a marriage alliance for you.''An alliance marriage?''Not exactly. The other family has a rule: marrying into their family means taking their surname.'Is this... becoming a son-in-law who marries into the wife's family?