Onegai Twins EP OVA

Released: 2004

One Stormy Night Movie

Released: 2005

One Week Friends Kaori no Nikki

Released: 2014

Onee-chan ga Kita

Released: 2014

Onegai My Melody

Released: 2005

Onegai My Melody: Kuru Kuru Shuffle!

Released: 2006

Onegai Teacher

Released: 2002

Onegai Twins

Released: 2003

Onegai Twins (Dub)

Released: 2005

Onegai☆Teacher (Dub)

Released: 2002

Ongaku

Released: 2020

Ongaku Shoujo

Released: 2015

Ongaku Shoujo (TV)

Released: 2018

Oni: Thunder God's Tale

Released: 2022

Oni: Thunder God's Tale (Dub)

Released: 2022

OniAi

Released: 2012

OniAi Specials

Released: 2012

Onigamiden

Released: 2011

Onigamiden (Dub)

Released: 2011

Onigiri

Released: 2016