To put it simply, the gentle brother controlled the crazy and aggressive brother who killed his brother due to misunderstanding in the previous life. This time he was reborn to pursue his brother. The awkward and irritable younger brother is reborn as a cruel and cold-blooded chuuni, full of hatred for his older brother and striving for revenge.
The sister who pretended to be weak and pitiful in her previous life was hated by both of them at the same time. She couldn't hook up with her brother and could only watch the two brothers fall in love and kill each other.
Well... That's it for now. Two reborn brothers fell in love and killed each other while beating zombies.
There's abuse, there's complaints, there's middle school, there's the end of the world.
That's it~