Kayrin is the first student in her class, completes her assignments, has the best grades, and has 100% attendance. But she starts to question this life after meeting a boy named Erick who has very peculiar but interesting points of view about life.

25 years ago, scientists found a worm that can regenerate tissues at a cellular level. It was capable of turning anyone into an immortal being.
However, the result could not be other... Zombie apocalypse.
But differently from movies, it doesn’t destroy society but revolutionized it instead.