Five years later, the current Paladin Rin Okumura returned to the Vatican headquarters and Japan's Holy Cross Academy. He seemed to have an ulterior motive for returning specially. The Vatican cowardly placed all responsibility on Rin Okumura and his guardian Mephistopheles.
After defeating the devil Satan two years ago, Satan's magic weapons spread in the material world through possession and other forms. Okumura Rin came to deal with the aftermath of this matter, and teamed up with Seurat and Angel, who were close friends during his training, to deal with the matter. Unexpectedly, Seurat and Angel met with poisonous hands soon after, and the Japanese Holy Cross branch lacked combat power... [Except for the characters and their relationships (slightly modified), this work has nothing to do with the original plot, and is all original]