In the End of the World, I Will Build a Super Shelter Underground

(Imagination, cool writing, space, unhappiness intervention) After the zombie outbreak, I actually became a backup food for others, and the person who harmed me turned out to be my best brother. After my rebirth, in order to survive in this cannibalistic world, I used the abilities I gained after my rebirth to build a shelter underground. In this life, I must become a veritable boss in the eyes of others