Origins Of A Three Headed Watch Dog!

"Have you heard of it? The weapon of the Scarlet gunslinger," "yeah! They say it's powerful!" "Did you hear? It's said that the mans weapon is alive!" "Really? How?" "The rumors say that it was created in the underworld using the soul of a Demon!" "They call it Cerberus the Living gun". NOTICE!: I have lost my muse for this story and I'm Putting it up for Adoption.