6 decades books

In 4 years the world will plunge into chaos. To save the world, the gods appointed a human to become its guardian deity, a paragon who would guard the world with his all. However, all this power came at a heavy cost and he paid the ultimate price, losing that which he desired to protect. A year later with a vague sense of duty, she wanders in search of a newfound reason to accomplish what she was meant to.