The Chaos War

Who started the war ?
There's holes in our ozone.
All diseases that was eradicated now
killing thousands ,because no anti-virus works anymore.
Antibiotics used to help are no longer useful anymore.
Doctors for told about this problem.
All nonhumans are getting sick, and can't have any children.
Our unlikely, and unwilling savior is woman nickname Kare who died in a car accident. She think she has no special ability. Does not wish to live. Who's the only living person that can survive the disease, the only mammal to have twins, and
That doesn't have any ill effect.
Modern technology doesn't help in the survival of the mammal children. Only natural birth survives.
Most females in the world have changed their blood type to O.
Her blood type does not exist.
6 months in the war it became a robotic War.
The second year all children under the age of 5 die.
On the third year all human over 40 die.
On the 5th Year the wave comes it knocks allTechnology around the world out.