When I die in a broken world

The young man Shirabane thought as he was bitten by a zombie, "That's the best." His parents evaporated, he couldn't go to high school, and the young man was in despair every day when he was forced to collect debt. However, for some reason, he wakes up and remains conscious in a zombie state! In that case, let's go to the high school we couldn't go to, make zombie friends, and enjoy a second life! ! Such a happy moment is fleeting, and he despairs of this world again. What will the young man find in this rotten world, and what will he leave behind when he dies again?