One Realm and Ten Realms

"One world is divided into ten areas, and ten areas form one world." The virtual reality game "Boundary" with 100% realism was born, with all kinds of settings. Hidden race, hidden occupation, there is nothing you can't think of. Baili Xing walked into the "Realm", possessing immortality and holding runes in his hands, traveling across the realm just to protect her. (The male and female protagonists are high school seniors, their identities are mysterious, and there is a bit of a wealthy family plot involved. They are not childhood sweethearts, but they like each other)