I Will Fulfill the Role of the Villain - Chapter 122

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

Lin An's life underwent a drastic change.The basketball under his bed had turned into a bleeding head, which would hop next to his pillow and hum softly by his ear at midnight. The subway racing into the station had become a gigantic lizard, opening its gaping maw, waiting for him to line up and feed it.The world was not as simple as he had imagined. Behind the bustle of the city, the Witch Hunter Knights roamed in search of evil wizards to slay.The ordinary worker, Lin An, inadvertently became a member of the Antler Witch-Hunting Knight Order, shouldering the glorious mission to protect humanity.He must be careful, careful, and then even more careful.Careful not to reveal his true identity as a wizard.…“Why Hunt a Cowardly Innocent Wizard?!”

“I’m in desperate need of money to pay Grandmother's medical fee. I will marry Charles instead of Yvonne as soon as I get the money.”

When her sister Yvonne ran away from the wedding, Autumn was forced to pretend to be Yvonne and marry Charles. Her only wish was to get a divorce after a year. Charles is rich and powerful. His name had been linked to innumerable ladies. He had different girlfriends for every day of a year. Neither of them had expected that they would fall in love with each other.

The world is terrorized by the powerful Black Witch who has been sealed in the moon. Every ten years, the night of Hexennacht arrives and a chosen witch must battle the Black Witch in hopes of finally defeating her.

As the current decade’s Hexennacht approaches, a mysterious girl named Kagami Kagami arrives and meets Horinouchi Mitsuru, the daughter of the previous Hexennacht representative.

It takes place between Kyoukai Senjou no Horizon and the City Series, two other series by the author.