Boku no Sekai Anime Details and Episodes The fifth instalment of the Sekai Series. An alleged prequel to "Kimi to Boku no Kowareta Sekai," when Byouinzaka Kuroneko and Hitsuuchi Samatoki were in… Series info · Watch free · Trending anime · Airing schedule FormatNovelStatusUpcomingSourceOriginalCountryJapan Mystery · Psychological Bukimi de Soboku na Kakowashita Kimi to Boku no Kowareta Sekai (Prequel) Kuroneko Byouinzaka · Samatoki Hitsuuchi