Theseries,setintheHeianera,AbenoMasahiroisthegrandsonofthegreatonmyōji,AbenoSeimei.Seimei,whopa.s.sedhisteachingsontohisgrandson,Masahirowhohaslosthissixthsenseandtheabilitytoseespirits.Masahiroconstantlyfeelsresentfulforbeinginhisgrandfather’sshadow.
　　Evenso,oneday,Masahiromeetsafox-likecreaturewhichhenamesMokkun,whoshowshimhistruepotentialpowersafterfightingademon.MokkunisactuallyTodawhopreferstobecalledGuren.HeisoneofthetwelveshikigamicalledtheShinsho,whohaspledgedhisloyaltytoSeimeiandishelpingMasahirotosurpa.s.shisgrandfather.
　　Masahiro’sdreamtosurpa.s.shisgrandfathermaynotberealisedeasilyasnotonlydoeshehavetoconvincetheotherShinshōthatheisSeimei’struesuccessor,hemustalsoincreasehispowerinordertostopdemonscomingfromChina,theotherpartsofj.a.panandtheUnderworldaswellasrivalonmyōji’swhowanttodestroyj.a.pan.HealsohastokeephispromisetoprotectPrincessAkikooftheFujiwaraclan.