Onegai My Melody

Released: 2005

Onegai My Melody: Kuru Kuru Shuffle!

Released: 2006

Oni: Thunder God's Tale

Released: 2022

Oni: Thunder God's Tale (Dub)

Released: 2022

Onigiri (Dub)

Released: 2016

Onigiri ni Naritai Cogimyun

Released: 2020

Onipan!

Released: 2022

Onkyou Seimeitai Noiseman

Released: 1997

Only I Can Command All the Sects in the World

Released: 2024

Only I Can Use Summoning

Released: 2024

Onmyou Taisenki

Released: 2004

Onna Senshi Efe & Jira: Gude no Monshou

Released: 1990

Onyx Equinox

Released: 2020

Ookami Kodomo no Ame to Yuki

Released: 2012

Ookami Kodomo no Ame to Yuki (Dub)

Released: 2012

Ookami to Koushinryou II: Ookami to Kohakuiro no Yuuutsu

Released: 2009

Ookami to Koushinryou: Merchant Meets the Wise Wolf

Released: 2024

Ookami to Koushinryou: Merchant Meets the Wise Wolf (Dub)

Released: 2024

Ooyukiumi no Kaina

Released: 2023

Ooyukiumi no Kaina: Hoshi no Kenja

Released: 2023