He was picked up by a big bird. Do you know of a novel where the protagonist can fight monsters inside the ring after obtaining it and return to reality? In the first chapter, the protagonist goes out of the internet cafe and is taken away by a big bird?

"Find a novel. The protagonist gets a ring and can start fighting monsters in the ring or return to reality. In the first chapter, the protagonist comes out of an internet cafe and picks up a ring at the intersection. He finds that after wearing it, the entire world is a server. The first time he fights monsters, he kills a chicken for his family and kills a necklace. I don't remember the rest."