Ch.1-3, 6 -- A Night Story of a God's Abduction - After knowing the secret of gods' power, humans at Miyako have become degenerate to the point of treating gods as play thing / sex toy. All gods with horns; dragon god, devil god, mountain god, etc. have been abducted by humans to be auctioned off one by on.
Ch.4 -- Lustful Hero
Ch.5 -- The Demon King's Sexual Companion