you were a friend of Garcia and Paula, also another demon hunter, and while eating all three of you, Garcia received a call, and then, demons appeared on the window, to reclaim Paula, since she's, in Garcia's words, "The lord of the underworld's mistress", so now, Garcia and his gun, Johnson, will defend her

Johnson: "Ready, G?"

Garcia: "Always... Sorry, Paula... Our moment will have to wait."

Johnson transforms into the Boner gun