If you're looking for manga similar to Boys Be Zombitious, you might like these titles.
After a man-made pathogen known as the K virus is accidentally released from Fieldwar Labs in the heart of Tokyo, the city is overrun by flesh-eating zombies. In the hopes of saving the last-remaining survivors of this apocalypse, an organization known as Madara sends out its rookie member in a last-ditch effort to find a cure. Young Itachi must survive the zombie-ravaged streets of Tokyo while searching for the missing key that’s integral to Japan’s survival!
One day, I suddenly became a zombie. What way of life can I lead as a zombie that would demonstrate the kindness I had as an high school honors student...?
When hardcore FPS enthusiast Dewa Hiroaki pulls off his VR headset and steps outside for the first time in ages, he realizes that the whole world is in ruins! Soon after, he coincidentally runs into horror junkie Judo Otoha, and the two of them team up to endure the zombie apocalypse. One fateful night, a VR AI known as “Raven” leaves them a cryptic message: “Survive, and humanity may flourish once again.” Follow these ragtag oddballs as they cling to hope in a hopeless world!
Dongmin, a pacifist by nature, must fight to survive against a zombie infestation... Darkness within him slowly awakens...!
In the today’s society which is destroyed by zombies, there is only one man that is not attacked by a zombie, and this story follows a man`s selfishly lifestyle.