When I read this novel in 2007, it seemed to be a fantasy novel. It tells the story of a family member who gave a pet egg as a birthday gift... and then was framed...

In "The Tale of the Demon God", the protagonist is called Yaxun, and the pet is named Sirius. He comes from ancient ruins and is actually one of the guardians. He was given it by his uncle on his birthday. Because he has both light and dark sides, Known as the Silver Moon Demon and the Saint of Mercy, his identity as the Silver Moon Demon led his followers to create the Death Scythe Squad.