Gentlemen! After extensive biological research and paying extra attention during biology class I have been able to create proof that ZUN made a grave error in Cage in Lunatic Runagate and that it is impossible for Mokou to get sick.
BGM:
Phoenix Wright: Ace Attorney - Pursuit ~ CorneredViruses and bacteria enter human bodies to reproduce themselves (and for nourishment in the case of bacteria. Viruses are basically lifeless and don't eat). Bacteria gain nourishment by feeding off of human cells and reproducing inside them, destroying the cells. They eat their way through vital cells, and often emit substances that have negative effects on cells, destroying or damaging them too. Viruses can only reproduce by placing their own DNA in cells, which then combine with the DNA in that cell to form new viruses. The number of viruses in the cell keeps growing and growing until the cell bursts apart. They keep doing that with more and more cells until the human's internal defense system makes the viruses unable to do any more harm (viruses can't be destroyed by natural means, but you can prevent them from infecting more cells by changing the cell's properties, making it unable for viruses to keep producing and forcing them to slowly die out). Because these invaders destroy so many vital cells in such large numbers the infected gains problems to their health. Diseases are caused by cells being destroyed, which lead to negative effects! Heart, liver, skin and other organ diseases and infections are all caused by invaders destroying it slowly bit by bit!
And that is where the immortals come in: Hourai elixir makes one regenerate from any injury, you can't deny that. Cuts, blasts, burns, flesh wounds, no matter what it heals again. If an immortal is completely destroyed to the molecular level they revive with a new body the next day. So all these wounds obviously get healed by
cells rapidly regenerating and fixing the wound. The character remains young because they maintain a perfect cellular regeneration, making their bodies unable to deteriorate and grow old. It all revolves around perfect cellular regeneration!
So if a bacteria or virus destroys an immortal's cell, the cell
should instantly regenerate/be replaced with a newly made cell. No matter how hard the virus or bacteria tries, they will be unable to destroy enough cells to cause any negative effects on the immortal
whatsoever. The regeneration of an immortal is faster than any virus or bacteria. And by the time the viruses and bacteria have finally copied themselves enough to keep up with the regeneration the immortal would have already created an immunity against the invaders, making the invaders die out.
Viruses and bacteria can impossibly make an immortal sick because they could never be able to keep up with their cellular regeneration! And the immortal would have built up an natural immunity to the disease long before the time the viruses and bacteria have enough forces to keep up with the cellular regeneration!
And cancers are also caused by cells being 'broken' and 'damaged', making them run rampant and causing negative effects. Because it's damaged, it gets fixed up due to the workings of hourai elixir and rapid cellular regeneration. Or the immortal could rip out the tumors herself and then let the cellular regeneration fill up the spots again with healthy cells.
And if the immortal suffers from a disease that cancels out defense systems (AIDS, obviously), the immortal could just let their body be blasted to dust, making the viruses 'fall out' of the destroyed body and scattering (and dying. HIV can't survive in open air). The immortal would revive the other day with a new, magically fabricated body, devoid of any HIV viruses and allowing their body to build up a defense system again.
Conclusion:
Mokou couldn't possibly have become sick because she has perfect cellular regeneration! If she would show symptoms of disease it would mean the disease in question would make a normal human be visibly devoured alive from the inside by zillions of viruses and bacteria. And that is fucking impossible since the human would have long before that either have made an immunity or have died in a non-violent and non-gory way. It is IMPOSSIBLE for ANY kind of bacteria or virus to be able to produce THAT many brethren in one being in such a short amount of time!
So in the end, ZUN either made an error or CiLR never happened.CASE CLOSED
