Onimusha
Otaku no Video
Operation Han-Gyaku-Sei Million Arthur
Oneechan ga Kita
Overlord: Ple Ple Pleiades - Nazarick Saidai no Kiki
Onihei
Orphen
Ozmafia!!
Overlord IV
Ore no Imouto ga Konnani Kawaii Wake ga Nai.
Overlord: Ple Ple Pleiades 3
Ouran High School Host Club