Armor: Use a Few Buns to Exchange for Armor at the Beginning

Fifteen years ago, something unknown happened, causing the people living in Rosen City and this huge city to disappear overnight. Now, 15 years later, people have long forgotten this incident and have begun a new life in the newly built Rosen City. However, the crisis quietly arises, because people living in this city always disappear inexplicably. Zhang Haoran, an ordinary college student living in Rosen City, also disappeared, but he came back safe and sound, but he became an armored warrior during this disappearance.