Raidou Kuzunoha the 19th

Raidou Kuzunoha the 19th revolves around a reluctant teenager who has to take up the name kuzunoha after a mysterious tragedy befalls his predecesor, Raidou kuzunoha the 18th. Gouto came to train the next Kuzunoha since an immediate replacement is called for. He comes to Johei Uehara, a regular teenager that wants nothing to do with Kuzunoha. Along the way, they meet other demons and faces many hardships. The story of Johei as a devil summoner begins here.