"Death" whose parents were both doctors, His mother "Aira" had an incurable disease and visited his father "Zaine" for medication, By that time, they fell in love with each other and his father taught medicine to his mother, Aira eventually became a doctor but Aira tries to help other people before she runs out of life.
One day she finds a man near death and saves him and treats him well, That man happens to be "Zerexs", He lends his half of the blood energy to the Aira's son "Death" as a gift for saving his life.
When everything was going smoothly, Their dog died, When Zaine examined the body, It was the same disease as "Aira's" And Zaine found out that the disease is viral and spread from one person to another person.
When Aira heard it, she fought with death saying that, I don't wanna see you again, because she knew otherwise death would not leave her, by considering death now has a large amount of blood energy, she thought, he would be fine alone.
Death leaves the house and reaches a farland where he nearly loses his memories on the journey and becomes a slave in that country.
Aira moves from place to place to help people with diseases as she can't stay in one place for long. She helps irrespective of whether they are good or evil, by understanding the value of life.
She is legendly called "THE WANDERING ANGEL" By others.
Zaine who lost his wife and son for nothing but a disease, Tries to find the medicine that cures everything.