Manga starting with O
323 series · page 1 of 2
- O/A2009
- Obaka-chan, Koigatariki20087.45
- Obey Me! The Comic2021
- Oblivion Battery20187.23
- Observation Records of My Fiancée: The Misadventures of a Self-Proclaimed Villainess2017
- Observing Elena Evoy20207.19
- Obsidian Bride2023
- Occultic;Nine2014
- Ochinai Yogore wo Boku wa Nanto Yobeba Yokatta noka2025
- Octave20087.39
- Oda Nobuna no Yabou2011
- Odd Girl Out20157.46
- Odd Love2020
- Oddman 1120117.25
- Odd Taxi2021
- Ode to Kirihito19707.41
- Odette2014
- Odoriba ni Skirt ga Naru20207.39
- Office Urban Legend Creation2006
- Off Stage Love Side20227.27
- Off to an Invincible Start2021
- Of the Red, the Light and the Ayakashi20127.34
- Ogawa to Yukai na Saitou-tachi2006
- Ogus's Law2019
- Ohana Holoholo20087.42
- Ohayou toka Oyasumi toka20147.32
- Oh, Chunja Chunja! High School Bullying
- Oh! Dangun20247.28
- Oh! Holy20157.36
- Ohitsuji-chan wa Sawaritai2024
- Oh! My Assistant2018
- Oh! My Brother2005
- Oh My God!2005
- Oh My Goddess!19887.40
- Oh My Goddess! First End2006
- Oh My Hero!20167.21
- Oh, My Sweet Alien!20097.29
- Oh Yes! Pussy Harem!!2019
- Oide yo! Mizuryuu Kei Land: Bitch to Sukebe na Parade Day2017
- Oiran Girl20097.36
- Oishii Kankei19937.36
- Oishinbo: À la Carte1983
- Oishou Gakari no Oshi Koto Roman @COMIC2026
- Oita ga Sugiruwa Koneko-chan20157.30
- Ojikoi20127.30
- Ojisan wa Kawaii Mono ga Osuki.2017
- Ojojojo20127.34
- Ojousama no Gohoubi2006
- Ojousama no Himitsu♥2008
- Ojousama wa Oyome-sama.20077.38
- Okane Ariki no Kankei desu ga20197.20
- Okiku-san wa Icha Tsukitai20217.21
- Okitegami Kyouko no Bibouroku20157.34
- Okobore Hime to Entaku no Kishi20137.35
- Okosama Box20157.29
- Okubyoumono ni I Love You20147.26
- Okujou no Bye-Bye2007
- Oku Made Furete mo Ii Desu ka20167.24
- Okuru Kotoba20177.32
- Oku-san's Daily Fantasies20077.29
- Old Boy1996
- Old-Fashioned Cupcake20197.43
- Old Knight in the Frontier: Bard Roehn20167.37
- Olympos2007
- Omae ga Sekai wo Kowashitai nara19997.37
- Omae wa Hitsuji.2014
- Omae wo Otaku ni Shiteyaru kara, Ore wo Riajuu ni Shitekure!2011
- Omae wo Otaku ni Shiteyaru kara, Ore wo Riajuu ni Shitekure!2012
- O Maidens in Your Savage Season20167.31
- Omamori Himari20087.22
- Omamori no Kamisama7.31
- Omamori Shimasu, Dokomademo2011
- OmegaComplex20227.28
- Omega Heroine Wants Her Alpha Villainess2022
- Omega no Mukotori20207.26
- Omiai Shitakunakatta node, Murinandai na Jouken wo Tsuketara Doukyuusei ga Kita Ken ni Tsuite2020
- Omniscient Reader20208.56
- Omniscient Reader's Viewpoint2022
- Omoi no Kakera20097.32
- OMORI20247.17
- Omukae desu.1999
- Onahole Classroom2017
- On a Leash20177.25
- On and Off: Work-Life Imbalance20237.32
- Onanie Master Kurosawa: After the Juvenile2007
- Onani Master Kurosawa20078.22
- Once More20197.39
- On Doorstep20167.34
- One Day, Suddenly, Seoul Is2021
- Oneesan to Koi Shiyou2011
- One-Eyed Wolf in the Sahara2020
- Onegai Teacher2001
- One More Step, Come Stand By My Side2020
- One-of-a-Kind Romance2018
- One Outs19987.99
- One Piece: Mugiwara Daigekijou2005
- One Piece Novel: Ace's Story2017
- One Piece Novel: Heroines2019
- One Piece Novel: Law's Story2018
- One Piece Novel: Mugiwara Stories2017
- One Piece Party20147.36
- One Pound Gospel19877.30
- One-Punch Man20128.34
- One Room Angel20177.58
- One Room of Happiness20167.71
- One Room Rakuen2021
- One-Room TA20227.51
- One Step Closer to the Demon King20217.25
- One thousand and one nights20047.40
- One Too Many Supporting Male Leads2024
- One-Week Family20217.29
- One Week Friends20117.35
- Onidere2008
- Oniichan dakedo Ai sae Areba Kankeinai yo ne!2010
- Onii-sama e...19747.36
- ONIMAI: I'm Now Your Sister!20187.57
- Oniure Idol ga Kyou mo Watashi wo Oshitekuru2024
- Onizuka-chan to Sawarida-kun2019
- Only Hope2022
- Only S, Absolutely M2007
- Only Sense Online20147.28
- Only Serious About You20087.54
- Only the Flower Knows20097.62
- Only the Ring Finger Knows20017.37
- Only the Stars Know20167.31
- Only Yesterday1987
- Only You: Tobenai Tsubasa1997
- Onna Doushi toka Arienai desho to Iiharu Onnanoko wo, Hyakunichikan de Tetteiteki ni Otosu Yuri no Ohanashi2020
- Onna Doushi to ka Arienai deshou to Iiharu Onnanoko wo, Hyakunichi-kan de Tetteiteki ni Otosu Yuri no Ohanashi20207.32
- Onna ga Nigate na Yankee to Shoujo no Hanashi20197.22
- Onna Kyoushi to Boku no Himitsu2015
- Onnanoko ga Shinu Hanashi20137.30
- Onnanoko wa Koi wo Suru to Mousou Shichaun desu.2010
- Onna no Sono no Hoshi20207.41
- On or Off20197.49
- Onozuka-senpai wa Warui Hito2024
- On the Contrary2019
- On the Quiet2006
- On the Way to Meet Mom20248.19
- Onward Towards Our Noble Deaths19737.33
- Onyanoko Darlin'2014
- On Your Knees, Your Highness!2025
- Ooh La La2020
- Ookamidomo no Shitsukekata2011
- Ookami ga Kuru!2005
- Ookami-heika no Hanayome20097.37
- Ookami-kun Won't Hand Over2022
- Ookami Lover2007
- Ookami-sama no Koiwazurai20207.31
- Ookami-san Series2006
- Ookami-san to Shichinin no Nakama-tachi2010
- Ookami Shounen wa Kyou mo Uso wo Kasaneru20147.69
- Ookami wa Tsuki ni Koi wo Suru20247.26
- Ookami wo Karu Housoku2016
- Ookiku Furikabutte20037.51
- Ookumo-chan Flash Back20177.31
- Opapagoto20137.32
- O-Parts Hunter20017.37
- Open Air2007
- Open Sesame20017.33
- Operation Liberate Men2000
- Operation: True Love20227.41
- Opposite & Dilemma20077.31
- Opposites Attract20217.18
- Opus19957.45
- Op: Yoake Itaru no Iro no Nai Hibi2016
- orange20157.79
- Orange Chocolate2008
- Orange Kiss2003
- ORANGE MARMALADE20117.53
- Orange Planet2005
- Orange Yane no Chiisana Ie20057.37
- Orb: On the Movements of the Earth20207.73
- Orc Eroica2020
- Ore dake no Senzoku Alpha20197.23
- Ore ga Akuma de, Aitsu ga Yome de.20117.39
- Ore ga Mitsuketa, Conveni no Koi2022
- Ore ga Ojousama Gakkou ni "Shomin Sample" Toshite Rachirareta Ken2011
- Ore ga Watashi ni Naru made20197.41
- Oreimo: Kuroneko20117.29
- Orenchi no Maid-san20157.27
- Ore ni Koishite Dousunda20077.43
- Ore no Aoharu wa Watasanai20187.19
- Ore no Buka ga Eroi Mousou wo Yamete Kurenai2018
- Ore no Class ni Wakagaetta Moto Yome ga Iru2024
- Ore no Genjitsu wa Renai Game?? ka to Omottara Inochigake no Game datta2017
- Ore no Imouto ga Konnani Kawaii Wake ga Nai2008
- Ore no Imouto ga Konnani Kawaii Wake ga Nai: Ayase If2020
- Ore no Imouto ga Konnani Kawaii Wake ga Nai: Kuroneko If2021
- Ore no Kanojo ga Mangaka ni Naru2021
- Ore no Kanojo to Osananajimi ga Shuraba sugiru20117.27
- Ore no Kiss dake Oboete yo2021
- Ore no Kokan wa Bishoujo Datta no ka20227.25
- Ore no Nounai Sentakushi ga, Gakuen Love Comedy wo Zenryoku de Jama shiteiru2012
- Ore no Shibou Flag ga Todomaru Tokoro wo Shiranai2015
- Ore Ride!!2013
- Oresama Ouji2008
- Oresama Teacher20077.69
- Oretachi no Field1991
- Oretama2006
- Ore to Joushi no Kakushigoto20167.24
- Ore, Twintail ni Narimasu.2012
- Ore wa Teppei1973
- Ore wo Suki nano wa Omae dake ka yo2016
- Ore Yome. Ore no Yome ni Nare yo20147.29
- ORIGIN20167.44
- Orihara Izaya to Series2015
- Oroji Neoreul Igigo Sipeo20197.29
- Oroka na Tenshi wa Akuma to Odoru20167.36
- Orpheus no Mado1975
- Or Something Like It20177.25
- Osaerarenai!2006
- Osake wa Fuufu ni Natte kara20157.24
- Osananajimi BIG LOVE20247.18
- Osananajimi ga Do M de Tsundere Nan desu ga2016
- Osananajimi ga Kamisama datta Hanashi2018
- Osananajimi ni Najimitai20187.10
- Osananajimi wa Ore no Senzoku Okuchi Maid2020
- Osanazuma to Issho2013
- Oshi no Bishoujo ni Kokuhakusareru Hanashi20237.19
- Osomatsu-san2016
- Osoraku Kanojo wa Ore no Aniki wo Neratteru20257.52
- Otaku no Musume-san20067.38
- Otaku Vampire’s Love Bite20227.37
- Otaku x Gal2022
- Otameshi to wa Ie, Sukisugiru2021
- Othello2001
- Otherside Picnic20187.51
- Otherworld Barbara20027.24
- Otherworldly Izakaya "Nobu"20157.39
- Otherworldly Maidens: Monster Girls from Another World2020
- Otogi Matsuri: Dark Offering20027.31
- Otogimoyou Ayanishiki20057.34
- Otogimoyou Ayanishiki: Futatabi2009
- Otoko ga Otoko wo Aisuru Toki Series1996
- Otokogokoro20077.36
- Otoko Hime to Mahou no Lamp
- Otoko Ippiki Gaki Daishou1968
- Otokomae! Beads Club20047.50
- Otoko no Isshou2008
- Otoko Yamome mo Hana wa Saku20157.25
- Otome Danshi ni Koisuru Otome20177.17
- Otome Game Sekai wa Mob ni Kibishii Sekai desu: Kyouwakoku-hen2025
- Otomege Tensou, Ore ga Heroine de Kyuuseishu!?2020
- Otome Hime2013
- Otomen20067.41
- Otome no Itari2020
- Otome no Sainou20047.33
- Otome no Teikoku20107.29
- Otomental2007
- Otome Yankee wa Unmei no Hito wo Matsu.20187.20
- Otome Youkai Zakuro20067.31
- Otona Keikenchi dj - Boku wa Sunao ja Nai.2009
- Otona ni Narenai Bokura wa20247.20
- Otonari Complex20147.27
- Otonari ni Noraneko
- Ouchi e Kaerou2007
- Ouchou Haru no Yoi no Romance2003
- Ougo Mitsunaga wa Namagoroshi ga Tsurai20197.30
- Ougon no Keikenchi20237.32
- Ouji no Hakoniwa2011
- Ouji Romantica20057.40
- Oujisama☆Game20027.30
- Ouji-sama Nante Iranai2016
- Oujisama no Yume Utsutsu2006
- Ouji to Majo to Himegimi to2009
- Ouke no Monshou1976
- Oumagadoki Doubutsuen2010
- Our Aimless Nights20227.21
- Ouran High School Host Club20028.17
- Ouran Koukou Host Club2008
- Our Beloved Summer20217.32
- Our Dear Tamura-kun20057.27
- Our Dining Table20157.77
- Our Dining Table: Seconds, Please!2023
- Our Dreams at Dusk: Shimanami Tasogare20158.16
- Our Everlasting20007.31
- Our Family, Now and Forever20227.27
- Our Guild's Idol20257.33
- Our Kingdom20007.32
- Our Last Crusade or the Rise of a New World20177.33
- Our Lives After the Apocalypse2017
- Our Lucky Future Together20227.24
- Our Not-So-Lonely Planet Travel Guide20197.34
- Ouroboros20197.32
- Our Paradise20187.25
- Our Precious Conversations20157.57
- Our Secret Alliance20227.65
- Our Sunny Days20237.63
- Our Sweet One-Room Apartment20187.21
- Our Teachers are Dating!20187.28
- Our Torsos Align: Human x Monster Love2017
- Our Wonderful Days20177.30
- Our Youth20207.37
- Ousama★★Game2006
- Ousama ni Kiss!2006
- Ou-sama no Shichiya2006
- Ousama-tachi no Viking20137.27
- Ou-sama α to Puppy Love ♥20187.31
- Out20127.60