1Oroka na Tenshi wa Akuma to Odoru 2Osake wa Fuufu ni Natte kara 3Osake wa Fuufu ni Natte kara: Yuzu Atsukan 4Osananajimi ga Zettai ni Makenai Love Comedy 5Osananajimi to wa Love Comedy ni Naranai 6Oshi ga Budoukan Ittekuretara Shinu 7Oshiete! Galko-chan 8Osomatsu-san 9Osomatsu-san 2nd Season 10Osomatsu-san 3rd Season 11Otaku ni Yasashii Gal wa Inai!? “Gals Can’t 12Otherworldly Evil Monarch 13Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni T 14Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni T 15Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni T 16Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni T 17Otome Game Sekai wa Mob ni Kibishii Sekai desu 18Otome wa Boku ni Koishiteru 19Otome wa Boku ni Koishiteru: Futari no Elder The Animati 20Otome Youkai Zakuro 21Otona no Bouguya-san 22Otona no Bouguya-san (Rimen) 23Otonari ni Ginga 24Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sa 25Ou Dorobou Jing 26Ousama Game The Animation 27Ousama Ranking 28Ousama Ranking: Yuuki no Takarabako 29Oushitsu Kyoushi Heine 30Oushitsu Kyoushi Heine Movie 31Outbreak Company 32Over Goddess 33Overflow 34Overlord 35Overlord II 36Overlord III 37Overlord IV 38Overlord Movie 1: Fushisha no Ou 39Overlord Movie 2: Shikkoku no Eiyuu 40Overlord Movie 3: Sei Oukoku-hen 41Overlord: Ple Ple Pleiades 42Overlord: Ple Ple Pleiades – Nazarick Saidai no Ki 43Overlord: Ple Ple Pleiades 2 44Overtake! 45Owari no Seraph 46Owari no Seraph: Nagoya Kessen-hen 47Owarimonogatari 48Owarimonogatari 2nd Season 49Oyome-sama Honey Days♥ 50Ozma 51Ozmafia!!