Thunder Cannon

The was a cannon originally wielded by the demon named Saiten. However, he was killed by one of the Four War Gods, Kyōra, who took his weapon along with that of his partner, Kujaku, as battle spoils. While he took Kujaku's fan, for himself, the Thunder Cannon was given to his comrade, Jūra. It would be destroyed when sucked into Miroku's Wind Tunnel. It seems to have an infinite supply of ammo.