Start Over, Yagami

One day, I stumbled upon a startling truth:

The universe is a cell, and an alien virus has invaded. The end of the world is near.

The flying sword that fell from the sky turns out to be a radiotherapy weapon;

The parents who raised me are actually superviruses;

My childhood sweetheart thinks I'm dead and is about to marry someone else...

I came back to life after a bizarre death, and this is only the beginning...