Rebirth in the Apocalypse: I Want to Strengthen Myself

The end of the world is coming, and 70% of humans will become zombies. I used to trust my lover, but my best friend was betrayed by them. I used my superpower to forcefully take the crystal core out of my brain. After I am reborn, I will protect my family by myself, and I will strengthen myself. "But who are you! Why do you keep helping me? I won't believe you." "It doesn't matter. Let's take our time." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.