If you're looking for manga similar to Shinomiya Kouta wa Mada Shinenai: Border of the Dead, you might like these titles.
In a world where zombies have been rendered harmless and non-contagious and are now sometimes kept like pets, Seiichi begins living with twin zombie children given to him by his father.
Two months have passed since a zombie epidemic began. Despite the chaos around, three high school students in sailor suits live ordinary school lives. Maiko is a transfer student who hopes to become an idol. Even though Maiko goes through various incidents, her friendship with Momoka and Mutsumi deepens. One day, zombies attack people, but music comes out from the radio and the zombies stop their attack to dance. With this type of music, humans are protected from the zombies, but they can't find the music source. Since then, Maiko, Momoka and Mutsumi are threatened by the zombies.
Six months after the world ended, a young man continues to live with his manager at a shopping mall. The rest had left, believing a rumor of salvation if they manage to reach the centre. During one of his rounds, he finds the first living person he's seen in a while. The girl who introduced herself as "Romero", was roaming not for food, water, or salvation—but rather, for a movie...?! "Who cares about humanity! The world is already up in flames, so why not just kick back and watch a movie?"
Some time before the June of summer. One day, she suddenly died... "I" and the corpse of the girl who should have died, "Makoto", spent those false summer days in that apartment. The relationship between these two sad, distorted people slowly becomes clearer...
Orphans Charlotte and William finally confess their feelings for each other and promised to be together forever. Yet, Charlotte is suddenly killed in a motor accident, leaving William devastated. Death is usually the end of most relationships, but it seems that Will has other plans...
An advertising company's newcomer, Adashino Ayano, is a zombie girl. A little strange girl who often trips, loses hands, feet and eyeballs, and loves zombie jokes. Dullahan salesman, vampire chairman, clerk with zombie mania; surrounded by distinctive members, Adashino will work hard today!
Now that the apocalypse is over, the former School Living Club members moved on to new stages in their lives, walking different paths. Letters help them remember the past, live for the present and stay connected with each other.