Bog Standard Isekai - Chapter 3Book 2:

Alvin had planned his future: after leaving the city of Serinthia and obtaining his graduation certificate in technology, he would return to his hometown, stay close to the only girl in his life, and kill a few people from time to time for fun and entertainment.But fate had other plans. On an ordinary day in the Royce Empire—one of the three great empires that ruled this world—the sky split open and a barrage of meteors descended. From that moment, the world changed, and the lands of the empire turned into a battlefield, as monsters appeared and people became hunters.Now, Alvin found himself forced to abandon his former dreams and return to his city before the companion of his life dies.

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

Victor was a normal 21-year-old man, he grew up in a loving family that helped him take care of himself knowing that he had a practically incurable disease, the RH null blood, he was the owner of a rare blood type…

But what Victor didn’t know, is that this blood type was a delicacy in the supernatural world, creatures that fed on blood loved his blood type…

And that blood he hated would be the factor that would make Victor the greatest vampire of all time.

With the marriage of her prostitute mother to the Count, Aria’s status in society skyrocketed immediately. After leading a life of luxury, Aria unfairly meets death because of her sister Mielle’s schemes. And right before she dies, she sees an hourglass fall as if it were a fantasy. And just like that, she was miraculously brought back to the past.

“I want to become a very elegant person, just like my sister, Mielle.”

In order to face the villainess, she must become an even more wicked villainess. This was the new path Aria chose to take revenge on Mielle who murdered both her and her mother.