Y/n sano, has dealt with a lot of sorrow. He saw his big brother die at the age of 11, then his best friend on bloody Halloween. Then his sister and then his other brother. He couldn't deal with anymore loss. He didn't know where he was going. So he then left the delinquent world to join the real world. So he went to high school, Hyosan High. He then makes friends there. What happens when a zombie apocalypse happens? Will y/n survive with his friends? Will y/n lose anymore friends along the way? (On-jo x reader) ------ I do not own all of us are dead or I do not own Mikey. Neither don't own you.