Otaku ni Koi wa Muzukashii
- Wotakoi: Love Is Hard for Otaku
- WotaKoi

Otaku ni Koi wa Muzukashii: Youth
- Wotakoi: Love is Hard for Otaku OVA
- WotaKoi OVA

Otaku ni Yasashii Gal toka, Kyonyuu no Osananajimi toka.
- An Otaku-Friendly Gal, or a Childhood Friend with Big Breasts

Otaku no Video

Otherside Picnic
- Urasekai Picnic

Otherworldly Izakaya "Nobu"
- Isekai Izakaya "Nobu"
- Isekai Izakaya - Koto Aitheria no Izakaya Nobu

Otoboku
- Otome wa Onee-sama ni Koishiteru
- Otome wa Boku ni Koishiteru

Otoboku 2
- Otome wa Boku ni Koishiteru: Futari no Elder The Animation

Otoboku: Special
- Otome wa Onee-sama ni Koishiteru: Special
- Otome wa Boku ni Koishiteru: Special

Otogi Story Tenshi no Shippo
- Angel`s Tail

Otogi Zushi
- Otogizoushi

Otogibanashi no Onigokko
- Fairytale Tag

Otogizoushi
- Otogi Zushi

Otoko no Ko Ojou-sama! Hikaru to Ayana no Himitsu Collection
- Crossdresser and Princess

Otome 0
- Mai-Otome 0: S.ifr

Otome Chibaku Yuugi: Kutsujoku Baigaeshi ADV
- Schoolgirls Shameful Games

Otome Domain The Animation

Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei Shiteshimatta...
- My Next Life as a Villainess: All Routes Lead to Doom!
- Hamefura

Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei Shiteshimatta... X
- My Next Life as a Villainess: All Routes Lead to Doom!
- Hamefura s2

Otome Game Sekai wa Mob ni Kibishii Sekai desu
- Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs

Otome Hime
- Nasty Thoughts, Dirty Deeds

Otome Nadeshiko Koi Techou
- Otome Nadeshiko Love Diary

Otome Nadeshiko Love Diary
- Otome Nadeshiko Koi Techou

Otome wa Boku ni Koi Shiteru: Trinkle Stars The Animation

Otome wa Boku ni Koishiteru
- Otome wa Onee-sama ni Koishiteru
- Otoboku

Otome wa Boku ni Koishiteru: Futari no Elder The Animation
- Otoboku 2

Otome wa Boku ni Koishiteru: Special
- Otome wa Onee-sama ni Koishiteru: Special
- Otoboku: Special

Otome wa Onee-sama ni Koishiteru
- Otome wa Boku ni Koishiteru
- Otoboku

Otome wa Onee-sama ni Koishiteru: Special
- Otome wa Boku ni Koishiteru: Special
- Otoboku: Special

Otome Youkai Zakuro
- Girl Demon Zakuro

Otomedori

Otona Joshi no Anime Time
- Otona Joshi no Anime Time: Kawamo o Suberu Kaze

Otona Joshi no Anime Time: Kawamo o Suberu Kaze
- Otona Joshi no Anime Time

Otonari ni Ginga
- A Galaxy Next Door

Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken

Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken 2nd Season
- The Angel Next Door Spoils Me Rotten 2

Otworzyć Drzwi
- Open the Door
- Tobira o Akete (1986)