Se-Joon and Se-Wa are siblings with a dark, complex relationship. Se-Wa, a girl considered psychotic by others, is attached to her brother... a little too attached. In her eyes, there is only Se-Joon, and no one else. And what of Se-Joon's feelings?... more>>

This manhwa contains incest themes.

Title comes from French poet Beaudelaire's compilation of poems, Les Fleurs du mal. <<less

After making a deal with God, she is reincarnated into a new world fully ready to dedicate her life to her younger sibling. However, things... more>> aren't so simple when she attracts the attention of the Emperor. Can't a girl just look after her sibling with no man? <<less

Fujishima Takara goes to high school and will start living in a dorm because he has lost all his family except for his father, who's... more>> always away for his work. Takara has to share a room with Hosaka Kiyomine. Living together isn't easy, and many rows ensue. Kiyomine is very introverted, while Takara is just the opposite. At first the two get on each other's nerves because of those differences. But things turn towards friendship and later on towards love. <<less

Hirose Goushi has a huge sister complex. So huge, he moves from his home town to Tokyo to attend Myouzen University in order to escape it!... more>>

Three years later, Goushi's little sister Noa shows up and informs him that she's taking the Myouzen University entrance exam and that she will be moving in if she passed. Little does Goushi know, she has a similarly large (if not larger) brother complex. <<less

A schoolgirl who was adopted by a family experiences hardships at school and home. Her foster family treats her as Reika, their daughter who had... more>> died a couple years ago. Suddenly, her real blood-related brother appears before her, who has been searching for her for years. Now her life is turned upside down. Will she learn to trust other people again? <<less

The cool, quiet girl and the airheaded playboy are in their first ever romance!? Welcome to a romcom about two high school students who are... more>> a bit slow to pick up on things and haven't ever had their first crush!! During the autumn of their first year of high school, Hayato Kuga is assigned to sit next to Yuki Amano. Miss Amano is basically silent at all times and never smiles. So, Mr. Kuga has to try this and that to get her attention thanks to the wall he senses coming from her. As this is ongoing, even Miss Amano, who found Mr. Kuga annoying at first, is starting to open up to him...!? <<less

Kyosuke Kosaka, a normal seventeen-year-old high-school student, hasn't gotten along with his younger sister, Kirino, in years. For longer than he can remember, Kirino has... more>> ignored his comings and goings and looked at him with spurning eyes. It seemed as if the relationship between Kyosuke and his sister, now fourteen, would continue this way forever. One day, however, Kyosuke finds a DVD case of a magical girl anime entitled Hoshikuzu Witch Meruru (Stardust Witch Meruru), which had fallen into the entranceway of his house. To Kyosuke's surprise, inside the case, an adult video game entitled Imoto to Koishi yo! (Love with Little Sister!) is hidden. <<less

Gorou has a crush on his older stepsister Haru. Unfortunately for Gorou, Haru happens to love teasing him sadistically in every way possible.... more>>

A 4-koma comedy about their wacky day to day life and interactions.

Hoozuki-san Chi no Aneki - Nano Shucchouban and 2 chapters of Hoozuki-san Chi no Aneki - Nano Branch are included in volume 3. <<less

Even in high school, Ritsu and Uta really get along. Suddenly, they have to pretend to be lovers...!? The real brother-sister exciting love comedy starts!!

From today, Meguru Kinosaki is a freshman in highschool. But it's not only that she hasn't had a first love yet; she's in fact a... more>> clean girl who's never been in touch with any guy apart from her older brother Toshiya. With this pure Meguru, her classmate Yuuma falls in love at first sight. He starts a determined attack, but the over-protective big brother blocks his way! Now Meguru's days start to turn around between a big brother with a sister complex and a pushy boy...!? <<less

Ogiwara Umi is an ordinary sixteen-year-old girl with an extraordinary older brother. Ogiwara Haruto is an up-and-coming star actor, and everywhere he goes girls call... more>> his name. This would be difficult for any little sister, but Umi has it particularly hard ~ she not only has a brother complex, but she’s actually in love with her brother! But perhaps the more important question is ~ does Haruto feel the same? <<less

Ami has always been jealous of her little brother Chihiro, who's a popular model for girls' clothing. Now he's old enough to attend her school,... more>> and all the boys are crazy about him, even knowing he's a boy! Still, he's her brother and Ami loves him, but are her feelings for him beyond those of a sister for her brother? <<less

There's no such thing as an older sister who hates their younger sister. Every older sister on the face of the Earth loves their younger... more>> sister dearly. I, Sakura Shima, have an adorable sister one year younger than me. The sister yuri comedy everybody is talking about! <<less

Masago is an average student. Everything about her is average except for her older brother, Shirou. He’s the president of the student council and everyone... more>> admires him. One day, while walking home with her brother, they get into an accident and her brother dies saving her. After Shirou’s funeral, Masago goes to the house of her brother's best friend, claiming to be her older brother. <<less

Based on the popular yuri OVA series, which is about the relationship between two fraternal twins and their daily life.... more>>

Yukino and Kanade continue their schooling, and Kanade takes a late night art class in preparation for her future.

As before, she usually ends up fooling around and drawing her sister in strange poses before finally getting her work done.

Kanade begins to question the feelings she has for Yukino... does she feel a pure sisterly love for her, or are her feelings more perverted? <<less

The strongest knight Albert, and a shut-in Princess Charlotte... What is the destiny that awaits this pair?

In order to protect the girl Yuuhi Katagiri, a new transfer student, from danger, Junichi Nagase is forced to kiss her. Not understanding what just... more>> happened, she yells at him, not knowing that her father has arranged for her to marry him. <<less

A series of related stories about (a lot of) middle and high school students as they discover their hatsukoi (first love).

Because of their parent's remarriage, high school student Satou Yuka, suddenly finds herself living together with her stepbrother, 23-year-old high school teacher Satou Taichi. Actually, their parents have not registered their marrriage and therefore they aren't even siblings by law; but since both parents aren't around, they end up living together! Taichi who has a very serious case of sister complex, wishes for Yuka to call him "onii-chan". But Yuka's reaction is very cold?... more>>

* Contains the short stories titled Private Princess, Chocolate Impact, Hot Chocolate, and Face of Fake as extras in each volume scanlated thus far. (Private Princess=vol.1, etc.)

Kid x Box has yet to be translated. <<less

The twins Maria and Noel have always lived together and are very closely linked. When Maria decides to enter Morinomiya School because of the beautiful... more>> eyes of its basketball coach, Noel, who refuses to be separated from his sister, decides to enter the same establishment. Unfortunately, there are no spots left for boys. He thus decides to pass himself off as a girl! But school life is not easy when one must constantly play in a comedy! Especially when Noel rapidly falls in love with Miyu, a fellow classmate, while he himself is courted by another student. <<less

Sakura had lived with her grandma ever since her parents died in a car accident when she was three. When she turned fourteen, her grandma also passed away, leaving her alone. Just when she was about to give up hope having a family, out of nowhere, four guys claim to be her older half-brothers.... more>>

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- Himitsu no Tobira no Kugurikata (Vol. 4)

Chika Terashima is a 10th grader that wants a prince like in shoujo manga. One day, Chika and her twin brother Shohei switched bodies. Since they both go to a school with only 1 gender, they both have chance to find their true love. <<less

Ai just loves her big brother, Yuzuru. He's so kind, so reliable and so cool! He always protects Ai from trouble and when she cries,... more>> he cheers her up! He's the perfect big brother. But, bad things happen soon. Her parents divorce and she and her brother are separated. Now, after nine years, one day, Ai, now 14 years old, finds a tall boy in front of her school. Who is this boy? <<less

In a modern country where the government is controlled by a Martial Shogun and samurai receive much respect, there lives fraternal twins of the Sakakido... more>> family. Kou, the brother, is very feminine, excels at cooking, cleaning, arts and crafts. Tsukiko, the sister, is masculine, loves fighting and is a combat genius. The twins learn about the Samurai High School, where men test their strength and women test their femininity, but the only way they can attend is by swapping places. If they are to be found cheating, they will be exiled so they have to overcome their gender differences and maintain their secret. <<less

Choi Gang Bae is well known for being a delinquent, even managing to be the top dog in a school full of troublemakers. But when... more>> he finds out his beloved sister is being bullied in an all-girls school, he protects her the only way he can; by becoming a girl. <<less

Meet Shizuki Maku - to say she looks "above average" would be a slight overstatement, but it's especially bad compared to her older twin brothers, the high-school heartthrobs Retsu and Tetsu. She always wondered whether or not she really belonged in her family, but things take a shocking twist when her brothers plant the suggestion that they may not be related after all.... more>>

Now she's supposed to pick one of them to be her boyfriend, all the while defending herself from all the other girls at school who want to keep her "brothers" for themselves! Life isn't easy when you're the ugly duckling!

Sonnan Ja Nee Yo received the Shogakukan Manga Award for shoujo manga in 2006. <<less