Looking at Chrystal's status, I wasn't too sure if they were considered good or bad. Simply because I don't know what other dogs' stats may be.
"System, why are there so many zombies? Better yet, what happened to cause this great change in everyone?"
[ Incompatibles' or what you are calling zombies, are those that have failed to harmonize to the power of mana. The body, mind, and soul that have been unable the assimilate break down and dies. Because mana is such intense energy, it reanimates the body of those still with a working brain. ]
[ Your young planet and organisms have not yet evolved to the extent where it can handle this type of energy. For this, nearly 70% of humanity has failed the assimilation process.]
"D**n so this God goes and kills off nearly everyone on the planet and calls this an opportunity for us to develop faster. That's f****d up."
[ The process of evolution has always been the survival of the fittest. The strong will surpass the limit and move forward while the weak will die out unable to keep up.]
[ The plants and animals have a greater chance of adapting to this change. They have permanently moved on instinct and followed the law of the universe, survival of the fittest.]
" I'm just asking the obvious now but are saying that all the plants and animal have evolved too? Does this include microorganisms and things of that nature? Do they too have access to this system?"
Things such as microorganisms cannot evolve as they are too small to contain this type of energy. [ Yes, all plants and animals, including insects, are also in the process of evolution. But this energy may introduce new kinds of microorganisms.]
"So as I get stronger, I probably can't catch a cold anymore, but there will be a new type of virus that I could catch."
[ Precisely, the incompatibles that have appeared on the planet also have the chance to evolve. They move solely on instinct, but this will develop into their nature as they grow. With this, they will start to think and advance their kind. The dead cells in their bodies are a new type of virus known as mana decay. Mana decay only infects humans if it gets inside the host's body. Mana decay will enter their system if humans ingest blood and are bitten or scratched by the incompatibles. ]
"Can those affected by mana decay be cured? How long does it take mana decay to process, and you fully change into an incompatible?"
[ The process of mana decay can be slowed or stop depending on the level of the virus. If you have evolved into a higher state of being and a lower level incompatible infects you. It is highly likely that your genes will destroy if not delay the mana decay. [ There is no cure for mana decay as it's essentially trying to bring back the dead. if you are on the same level or near of then the process only takes a few minutes, give or take the individuals.]
"Can we not call them incompatibles as that name is just too long and boring? Zombies are the best name for them, and it's what most humans will associate them as anyway."
[ It makes no difference if they are incompatible or zombies as long as you have the understanding of what they are and what threat they pose.]
"Is there anything else I should know about these 'ZOMBIES' before I head out?"
[ That is all the necessary information that is available to the host, as your current power is not significant enough to have access to more.]