Guilty Crown
Two manga adaptations were published, one each by ASCII Media Works and Square Enix. A light novel was published by Nitroplus in April 2012, titled "Guilty Crown: Princess of Deadpool". A spin-off visual novel for Windows, named "Guilty Crown: Lost Christmas", was also developed by Nitroplus, which came bundled with a 15-minute original video animation (OVA) titled "Guilty Crown: Lost Christmas".