Manga Directory -- O

Kai loves his stepbrother Riku from the bottom of his heart. However, Riku treasures “the bonds of siblinghood” more than anything, so Kai must hide his feelings and instead act as a “good brother”… but skinship no longer satisfies him anymore!

Vol.1 Ch.7

Apr 15, 2017

ONLY ONE (MOEGI YUU)

A collection of short stories: 1. Only You Accused of being a molester, Mochizuki gets saved by the gentlemanly Nagakura, and their friendship begins... 2. Only One Following his divorce and subsequent loss of his apartment, Mochizuki moved in with Nagakura though they've barely been together for two weeks. A problem soon arises when Nagakura's colleague, Hayami, appears on the scene. Apparently Hayami is an ex-student of Mochizuki's. Just why has his appearance caused a sudden rift between the two lovers? 3. The Gentle Distance Having grown up with a pair of brothers from next door, he slowly discovers his attachment to the younger brother... Could it be love? And what is this niggling feeling he feels for the older brother? 4. Mousou Prize! (The Delusionary Prize!) Shino has quite a crush on his cute tutor Akio. Akio promises Shino a reward if he can do well on his mock exams but what kind of reward is the student expecting? Will the tutor be forced to pay up? 5. 17-sai no Paradox (A 17-Year-Old Paradox) Kuroe is annoyed by his always-smiling teacher, Mizushiro. "So you treat all your students equally? So annoying!" Kuroe passes his boiling point and decides to take action in this ardent and thrilling school romance. 6. Extras Mizushiro tries to get Kuroe to say those magic words.

Oneshot

Aug 25, 2020

Ookami-sama No Ichizu Na Bouai

“It’s my first time both with a human and a man, but…since it’s become like this, isn’t the only way to calm your heat down would be to have sex?” While humans and beastmen couples are still rare, Sakutarou, an omega with a beastmen fetish, spends his days dreaming of a love with a beastman and continus to take his heat suppressors. Then one day, Sakutarou suddenly gets his heat in the middle of the city. Unexpectedly, an unfamiliar male beastman came to help…!? In front of this man, only by intertwining lewdly can this burning body be soothed.

Chapter 14

Jul 09, 2024

ORE NO KANOJO TO OSANANAJIMI GA SHURABA SUGIRU

Eita enters high school aiming for the National University School of Medicine. Because of his parents' divorce--and his goal--he shuns anything to do with romance or love. One day Masuzu, the school beauty with the silver hair, who's just returned to the country, enters his life in a most unexpected way. Chiwa, his childhood friend since elementary school, will not let this go without a fight.

Chapters 37.5

Nov 12, 2016

Old-fashioned Cupcake

Sleep, wake, and work — sums up the day-to-day life of 39-year old, Nozue. A routine that eases him, and conversely weighs heavily on him — which worries the hard-eyed but reliable Togawa, a 29-year old subordinate of his. In an unexpected turn of events, the two of them end up visiting a pancake shop bustling with girls.

Chapter 6.5

Nov 14, 2023

Otome Game No Hametsu Flag Shika Nai Akuyaku Reijou Ni Tensei Shite Shimatta... GIRLS PATCH

A Hamefura anthology focused on the series' female cast, published through Comic Yuri Hime.

Vol. 1 Ch. 9 Triple Booking (Peke)

Aug 09, 2020

Ogikei Chan Ga Suki Sugite Suki Sugite Suki Sugite... Suki

There's no intro for it...

Ch. 4 It's the Calm after the Storm! Onii chan

Mar 12, 2021

OUKOKU GAME

At the end of Meiji Restoration, a girl saint was crucified and burnt alive under persecution. A century later, Katori and six childhood friends are summoned to her world beyond the nirvana, where they receive the Great Commission: Build a kingdom, and make disciples of all nations. At every midnight, each of them are randomly given a role out of King/Queen, Noble, and Peasants. As the lowly must obey a higher-up in the hierarchy, can they fight and defeat other nations to conquer the world--before infighting brought up by their own hidden desires breaks them apart?

Vol.05 Ch.109

May 26, 2025

Ore Dake Saikyou Chouetsusha - Zen Sekai No Cheat Shishou Ni Mitomerareta

Awakeners, beings with exceptional physical and special abilities, exist in this world. Kannagi Minato, who has been bullied daily, finds himself dragged into a deadly situation. At the brink of death, he is suddenly reawakened. Inside him dwell the heroic spirits of the past founders who saved the world. His life changes after that incident.

Chapters 54

Apr 16, 2025

Onna Majutsushi-san, Moto No Sekai E Kaeru Tame Ni Ganbarimasu

Rintaro and Haruto are two friends who enjoy playing the VRMMO Eternal Maze Online, a fantasy video game where you can be a different person from the real world and enjoy a second life. One day Rintaro finds a mysterious item called the Reincarnation Jewel in his inventory so he decides to use it and teleports himself and his friend to a fantasy world. Rintaro became his female avatar who is a magician and Haruto his male avatar a strong paladin. Both stunned by what happened, they will search for information on how to get out of this fantasy world while at the same time trying to survive in this strange world so that they can return to their normal life.

Chapters 18

Jan 29, 2026

OKOBORE HIME TO ENTAKU NO KISHI

From AQUA Scans: Leticia's father, the current king, is very wise and knew that both of his sons have their own supporters and that if either one became king the other brother's supporters would rebel, and the country would have a civil war. So he decided to announce that he will retire while he's still alive and make his daughter, the princess, his successor! However, the princess never expected to be Queen and she really doesn't have any political allies. So she decides to gather a group of knights loyal to her and form her own round table before the day of her coronation. The problem is, all of the good knights who are strong and skillful and loyal have already been snatched up by her father and brothers for their own personal guards.

Chapters 17

Nov 12, 2016

OUGON NO RINGO

Ryuuji is a high school student and, at the same time, works part-time in a diner. This is because he is from a poor family, therefore he doesn't have money to buy or pack lunch in school. One time while he was on his shift, a man wearing sunglasses and aloha shirt stared at him as Ryuuji asked for his order. Suddenly, the man asked him to enter show business in Tokyo! He refused as he reason he didn't have money to do something like that. With his family situation worsening, he decided to take on more jobs which resulted his girlfriend feeling neglected and disappointed in him. Now rather unsure of what he should do, he decided that the only way for him not to give up was to go into show business. That's when he met her, the girl who changed his life.

Vol. 1 Ch. 7.2 Extra & Omake

Apr 29, 2020

Otonari Voice Chat

A young man who has just entered the university got an accident that causes him to be hospitalised for quite some time. That made him unable to find any friend, because those people have already created their own little groups! He was almost fated to be lonely, but luckily he met someone he really likes through his apartment wall.

Vol. 3 Ch. 19

Feb 21, 2021

Ojou To Nanahiki No Inu

This story takes place in a world where humans and beastmen coexist. Our protagonist, a Dog beastman, was a former gangster who's fallen on hard times, living on the streets and scraping by on what he can get. On one particular rainy day, he tries to fall asleep in an alley before being found by an eccentric 'Yamato Nadeshiko' type of girl. She offers him a home to sleep in, in exchange for him becoming her bodyguard. He doesn't think much of it until he sees her home and it's explained to him by the servants in it that she's the daughter of a Yakuza boss and has a sadistic personality. On top of all that, almost all her servants are beastmen as well!

Vol. 1 Ch. 5 Young Miss and Small Dogs

Mar 09, 2021

O Chikadzuki Ni Naritai

There's no intro for it...

ch.030

Oct 02, 2020

OKUKOI ESCAPE

From Yuzu Scanlations: In order to live by his principles of never losing a fight, high schooler Kanzaki Ryousuke will run from everything to win! …or at least that’s what he wants to do. Even though he always tries stay away from trouble, he saves his classmate Ikasa Kaede from a fight. Will Kaede be able to steal Ryousuke’s heart with his piercing gaze…? Suddenly, the transfer student Amano Fumi who made a promise to marry Kaede appears?! A heart pounding school love story about their unripe love! A second volume about Fumi and the playboy Zono’s perverted times together and rough sketches included!

Chapters 6

Jun 01, 2018

One Step Away From Happiness

Next Chapter (Next Issue): One Step Away From Happiness Chapter 42 One Step Away From Happiness Chapter 43 One Step Away From Happiness Chapter 44

Chapter 91

Jun 13, 2023

Outo No Hazure No Renkinjutsushi ~Hazure Shokugyou Datta Node, Nonbiri Omise Keiei Shimasu~

I am Daisy von Preslaria. Even though I was born in a viscount family that produces excellent magicians, I was the only one in my family that was granted the failure job, Alchemist. Since this has happened, I\'m going to try studying hard and becoming independent as a worthy alchemist! The five-year-old girl so resolved and began to make potions by trial and error. Thanks to the Appraisal skill that she secretly possessed, let alone failures, her finished products were of such high quality never seen anywhere! She cultivated medicinal herbs, indulged herself in research, went harvesting, and opened a store.

Chapters 32

Mar 04, 2026

Otonari No Tenshi-sama Ni Itsu No Ma Ni Ka Dame Ningen Ni Sareteita Ken: After The Rain

A spin-off of the series *[The Angel Next Door Spoils Me Rotten](https://mangadex.org/title/2fec6641-beb1-4ae9-a32f-204dd06688ac/the-angel-next-door-spoils-me-rotten)* which comicalizes the stories from Volume 5.5 of the Light Novel and its special edition booklet, which contains additional short stories.

Chapters 27

May 01, 2025

Oogata Shinjin No Kyouikukei

Muromiya is a short salaryman who gets teased a lot because of his height and gets assigned to train new employee Sera, who’s super tall. It’s pretty obvious that Sera thinks Muromiya is super cute, and one day after a drinking party they kiss...

vol.1 ch.4

Jan 01, 2021

ONOZOMI NO MAMA NI

A collection of short stories: 1) Onozomi no Mama ni Kaname has inherited an apartment for an elite from his rich but now deceased grandfather. The apartment comes along with a handsome butler, Hidaka . But there are influential people who want to separate them. 2,3,4) A Season For Three 5) The Imitation Lovers - "Would you be my pretend lover?" This unexpected question is posed to the person who has a one-sided love for the inquirer. - From Sweet Lunacy 6) Onozomi no Mama ni extra

Vol. 1 Ch. 5.5

Mar 04, 2020

ORE MONOGATARI!!

Gouda Takeo is a freshman in high school. (Both estimates: Weight: 120kg, Height: 2 meters.) He spends his days peacefully with his super-popular-with-girls, yet single childhood friend, Sunagawa. One morning, on the train to school, Takeo saves a girl, Yamato, from being molested by a pervert. Could this be the beginning of spring for Takeo? Nominated for the 2013 Manga Taisho Awards.

Vol.05 Ch.050

May 04, 2025

OUJA NO YUUGI

This is the era of the Three Kingdoms. [Distinction between water and fish] it is said that one can't live without the other, it is the same as the relation between generals and strategists. Elite Generals and Strategists are the specialists when it comes to battle. What secrets are they are hiding about their special abilities?!

Ch. 27

Apr 26, 2019

Ore No Imouto Ga Konna Ni Kawaii Wake Ga Nai - Ayase IF

This is the Ayase route of the Oreimo storyline.

Chapters 14.6

Jul 28, 2024

ORE NO KOUHAI GA KONNA NI KAWAII WAKE GA NAI

Manga adaptation based on Kuroneko's story, which starts in the 5th light novel.

Vol. 5 Ch. 35

Dec 21, 2019

Ore No Kirai Na Senpai

There's no intro for it...

Ch.0 (error)

Apr 01, 2020

OKASU BEKARAZU!! JUNKETSU TOKKU!

From MangaHelpers: In the year 2020, it was found out that a harmful virus had infected the human race, killing them slowly and bringing them towards a dark future. But with the technology they had in hand, in an attempt to save the civilized race, the people chose to go through with "Beast Transformation." Knowing that other than humans, all animals were safe from the virus, the humans made the decision to inject the genes of animals into themselves to become part-human, part-animal. In the end, the idea was "Either you do beast-transformation or die." With the race known as Homo Sapiens gone, by the year 2035, being a beast-human was normal. In this new world, one strange boy, Kokuryuu Kazuto, 14 years old, is the worst runner and least athletic, but somehow also the most popular, with girls giving him hugs and boxed lunches, to his chagrin. But one day, he's approached by three girls, members of a group called the "Pure-bred Special Ward," who claim that Kazuto is actually a human, who should not even exist. Although he's in disbelief, he has to accept it as fact when he finds out his "ears" and "tail" are all fake. How will Kazuto face this dilemma, when he's a human in this beast-human driven world?

Vol.5 Ch.29

Sep 22, 2017

Onnanoko Wa Otoko No Tame No Kisekae Ningyou Ja Neenda Yo

Read Now Add to Library

Ch.027

Aug 02, 2025

OKITSUNE-SAMA DE CHU

From Taruby: Our protagonist, Moji Shimeta, just so happens to fulfill the stereotype for being a worthless human. His inability to carry out a conversation has left him at the bottom of the barrel as far as friends are concerned. That Shimeta fell in love with the school idol Ishikawa Yuuko, however that kind of love is absolutely, perfectly, and completely impossible. During this time, the messenger of the gods, Osaki, appeared to grant Moji's request with a price attached concerning Moji's cooperation in catching some runaway evil spirits. However to catch them all, Osaki uses Moji as a vessel to become a servent of Uganomitamanokami (aka Inari) called Youko. Lots of Ecchi situations and humiliation abound at Moji's expense.

Chapters 30

Oct 26, 2016

OSHIOKI DA YO, SHIBA-KUN

From The Back Door: Shiba-kun is Kishitani Shougo-kun's muse. He thought it was mutual love, but Shougo has started acting strange...?

Oshioki da yo, Shiba kun Oneshot

Jun 10, 2018

ORE GA... YURI!?

A miraculous account of a doubter who was turned into a woman by the one true god. "If you cannot make a girl fall in love with you as a woman your punishment will be to remain a woman for the rest of her life." Thus spake INSR-sama - the powerful holy lesbian fox goddess who rules our lives - hallowed will be thy name.

vol.1 ch.8

Feb 13, 2020

Ore No Joshi Ga Elite Nano Ni Hetare Kawaii

The appearance of shrewd and capable, but also a handsome young-elite, when he got depressed he shrinks to puppy size. This matter was discovered by his subordinate, instead of spreading the discovered matter, this subordinate put his boss to domestication.

Chapters 15.2

Jun 07, 2026

OTOMETEKI SYNDROME

Tachibana Otome, a 16 years old otaku whose type of guy was "Blonde Hair and Blue Eyes" suddenly meet the that sort of person in real life....... How will it go for her?

ch.22

Dec 15, 2020

Ore Ga Fujoshi De Aitsu Ga Yuriota De

A "trouble comedy" about a fujoshi girl who meets a yuri otaku boy.

Vol. 2 Ch. 6 Kashiwa's Return

Apr 14, 2020

Osoraku Kanojo Wa Ore No Aniki O Neratteru

A high school guy who doesn\'t trust girls anymore has been tricked too many times by girls who just wanted to get close to his good-looking older brother. After all that, he decides he’ll never trust a girl again. But then, a pretty girl in his class suddenly starts talking to him a lot. Is she just trying to get to his brother too…? Or does she actually mean something else?

Ch.010.5

Aug 27, 2025

ODORU ECSTASY

There's no intro for it...

Vol. 1 Ch. 5 Last Step

Jan 13, 2021

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