It Makes Sense for a Divine Envoy to Have Divine Power, Right?

[Half behind the scenes + saving the world + no heroine] A new era has quietly arrived, but the poor world has fallen into a crisis that no one knows about. The bullied child has gained a mysterious power. Is it salvation or falling into the abyss again? The self-proclaimed mysterious family reappears. Is it hope or conspiracy? Panic! Fear! Everyone prays for hope to come again! Behind everything, a mysterious young man is holding a "book" in his hand and watching the development of the situation. ​In the end, everything is actually for the bonus?