I Hack Zombies to Pieces in the Apocalypse

A 33-year-old man mysteriously becomes reborn on the day the zombies break out after a car accident, and gains a storage space. He begins a journey of survival, hacking his way through zombies while stockpiling supplies. No bleeding-heart heroics, decisive killing, and plenty of stats. No overpowered abilities. One female lead. Was it all caused by human hands, or was it a natural disaster?