Monster In The Mist
Shounen ai with a mature ending Virus that turns people into zombies is on the loose! And the young man who figured out the vaccine for a similar virus is out saving people and doing research on the front lines. But he as he tries to lead the survivors back to district 1, who built a wall to keep the mist/virus and all the people they deemed lesser than themselves out, he deals with dissension amongst the group for his cold practical behavior and flashbacks to his senior in college who he had a crush on but was estranged from for working on the vaccine. More of an action story than a love story so it's fine as shounen ai. Takes almost 20 chapters to meet the ML anyway
Rainbow City
After the head researcher in a postapocalyptic world mysteriously, the government send their crazy but elite soldier to be a guard for the researcher's apprentice, hoping he will help find the vaccine for the 7th mutation of the zombie virus. The sexual tension is high The seme is very attractive and the uke is also my type. Non-stereotypical
Over The Paradise
Zombie apocalypse future where some people have mutated into espers and guides instead of zombies. Huiwon wakes up after being in an accident and recovering in hibernation mode for two months he's told (but its really ten years). He manifested as a guide and so decided to volunteer to help, but the esper he's assigned to is so cold and mean to him for seemingly no reason...
Dead man Switch