Eroge: I can Travel To The Ancient World - Chapter 236: Murder?

Born into a world of chaos and violence, young shapeshifter Rhishisikk struggles to survive. With the assistance of unlikely allies, he must learn to live among the most dangerous of monsters – human beings!

The story is about a boy entering high school, who answers a strange call from a public phone one night. The caller challenges him to a bet: She’ll remove the birthmark which he sees as the cause of so many problems, and he’ll have fifty days to win the heart of a girl he’d considered far beyond his reach. And with this, a very strange summer begins.

Lin Jin never imagined he would ever transmigrate. And to such a peculiar world at that. Here, deadly beasts were regarded as sacred, and thankfully, he owned a museum for deadly beasts.

A ritual gone wrong gave him the world's deadliest Class—now all he wants is blood.Zeth stole the most powerful ritual magic in the world from a mad cultist. A Class that's fueled by the blood of his enemies and human sacrifice. One that's illegal to use, punishable by gruesome death. And now that he has it, he's faced with a choice: hide away for the rest of his life from those who would hunt him down, or embrace the power, becoming the hunter to get revenge on the murderer that stole his friends' lives.For Zeth, that's no choice at all.His enemies have to die. And he plans to use every drop of blood, eldritch ritual, and demonic summoning he can to kill them.