Silent Sky is a combination of the additional episodes 13 and 14. It consists of the story in the future, three months after the incident that was similar to "New Generation Madness" and the disease Chaos Child Syndrome that brought by the past earthquake in Shibuya.
Up to EP 1Overlord: Ple Ple Pleiades - Nazarick's Greatest CrisisAnime
Up to EP 13SolaAnime
Up to EP 12Rail Wars!Anime
Up to EP 1Detective Conan Movie 21: The Crimson Love LetterAnime
Up to EP 1The Heroic Legend of Arslan: Chapter of Reminiscence - The Blade to Retake the KingdomAnime
Up to EP 25Yowamushi Pedal: New GenerationAnime
Up to EP 13Lord Marksman and VanadisAnime
Up to EP 1New Initial D Movie: Legend 1 - KakuseiAnime
Up to EP 1Yowamushi Pedal MovieAnime
Up to EP 4Fullmetal Alchemist: Brotherhood OVA CollectionAnime
Up to EP 26Hell Girl: Two MirrorsAnime
Up to EP 8Black★Rock Shooter (TV)Anime