Crossover Apocalypse Harem X Male Reader

Y/N Mayfire was just your normal teenage guy. He had a pretty average life, went to High School made some friends(Alot of which were girls) but all that suddenly got turned upside down. Someway somehow some sort of virus escaped from a lab being used to make Chemical Weapons and has spread all across the United States. Once the virus enters the blood stream it would infect the host effectively turning them into zombies. Now this may seem like some shit you'd see in the movies or video games and in fact it's actually scientifically IMPOSSIBLE for zombies to happen....boy were we wrong. In the year 2019 shit the fan when the virus infected a lab technician which ended up causing a panic in the lab and the virus was set free and the entire of the U.S was infected in a matter of days. Now Y/N has to survive in this world of the undead for as long as he can and escape the U.S into Canada but hey on the bright side atleast Y/N ends up getting a harem.