Karasu Tengu Kabuto

In Tensho era Japan, Kabuto - aided by a bloodthirsty talking sword and the gods of North, South, East and West - follows his family destiny by combating Kuroyasya Douki, the Black Night Demon, who (along with his demonic hordes) has returned to the mortal plane from hell, whence he was banished by Kabuto's ancestors. The second volume follows pretty much the same pattern but with the son of the first volume's protagonist taking the lead role.