The children of the angels and the children of the stars

The lawyer César and the professor Deodorina were a happy couple in the beginning of their marriage. But suddenly their world ended when bolts of light destroyed their city. Overwhelmed by their loss and their inexplicable survival, they come to discover that they're no longer the people they used to be. Perhaps, they weren't human at all!
They could bring things into existence, but not retrieve what had been lost. Incapable of getting physically hurt, their hearts could still be easily broken. Not able to sleep, they could see glimpses of the future whenever their eyes were closed. However, their eyes couldn't shed tears over what was to come.
Infinity was displayed before them, with a dreadful destiny in the horizon.
As the couple tries to work things out, a son comes into their lives. Young Diego ages, although slowly, sleeps sparsely and cries when hurt. Unlike his parents, his mortality seemed inevitable. Who would that child grow to become when his whole world consisted of other two people? How well would his parents raise him while striving to keep their humanity?
After centuries of the family attempting to make sense of things, a stranger arrives to disrupt their world.