rabies as a bl setting would perfectly combine omegaverse and zombies. like the world is infected with rabies and those infected behave like animals and they try to infect as many other people as possible before they ultimately die. but there are people who have a mutation, so even if they have rabies, they can’t die from it. but if they want to stay sane and not infect other people, they have to control their animalistic urges, which is really hard. the rabies virus periodically takes over their bodies, so they can’t control them for some time and they start infecting other people. the only possibility to get out of this state quickly is to have sex with a non-infected human. the mc would be this non-infected human who is hiding from all the other people because he doesn’t trust anyone, and the ml would be this human with rabies but also with this mutation that prevents him from dying. one time the virus takes over his brain and he starts looking for humans to infect, and finds the mc. the mc tries to run from him but some part of the ml’s brain stays sane and tells him to fuck the mc so that he can go back to being himself again. he tries to tell the mc about that but the mc doesn’t believe that’s possible, but they ultimately fuck and the ml comes back to sanity. they fall in love with each other but ml is scared that one time when the virus takes over his brain again, he won’t be able to resist kissing/biting the mc, and will infect him, and the mc will die because the rabies vaccine doesn’t exist yet. this is such a perfect setting i can’t believe no one ever wrote anything like that.