Orange
Our love has always been 10 centimeters apart.
Over the Sky
Onmyoji
Otaku no Video
Overtake!
Otome wa Boku ni Koishiteru: Futari no Elder The Animation
Only Yesterday
Orb: On the Movements of the Earth
Oretachi ni Tsubasa wa Nai: Hadairo Ritsu Kyuuwari Zou!?
Origin: Spirits of the Past
Otoboku: Maidens are Falling for Me!