Tracing Back to Dreams and Lost Life

The first part of "The Blood Book Trilogy" An unforeseen disaster struck this peaceful land, and almost all the creatures in the world disappeared. However, they did not disappear suddenly. It was more like they were cleared after everything had been done... Eight years later, the city turned into a deserted city, the buildings began to weather and crack, and green plants spread throughout the streets and alleys. A family of four survived in the ruins. They survived in this desolate place. While maintaining a condition that allowed them to survive, they were also constantly searching for survivors and the secret of the mass extinction of species. Until... The building collapsed...