Kimisen, Our Last Crusade or the Rise of a New World 2nd Season, The Last Battlefield Between You and I, or Perhaps the Beginning of the World's Holy War 2nd Season, キミと僕の最後の戦場、あるいは世界が始まる聖戦
Sequel of Kimi to Boku no Saigo no Senjou, Aruiwa Sekai ga Hajimaru Seisen.