Tragically, a noble girl was forced to marry a notoriously cold-hearted Duke. Yet it seems as though spring has come and the flowers are in... more>> bloom... wait, why are you smiling so lovingly at your brother? Your Majesty, I really have no intention of taking your brother, the Duke, away from you! Please believe me! <<less

When Qiu Zinan graduated from high school three years ago, he went to the bar with friends. He disguised himself as a girl and met the man named Liu Ye on that very evening. That night Liu ye and Qiu Zinan then had a one night stand. Zinan has always been obsessed with him. He didn't expect this man to be his sister’s boyfriend three years later.... more>>

Official English Translation:

Official Japanese Translation: <<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

After all the Class cards have been captured, Illiya and Myu are once again ordered by Rin and Luvia to help them stabilize the Earth's pulse, that went haywire when they started capturing the Class Cards. However, something goes wrong after the ceremony. Illiya tries to protect everyone from the destructive explosion. But when the explosion is averted, and seemingly everyone is safe... Illiya finds a clone of herself sitting beside her.... more>>

What had happened? And how will Illiya get over this crisis? <<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

Features Illya as a main character where she's living an alternate life as a school girl. However, she is chosen by the Magical Stick Ruby... more>> and is involved in a quarrel between Rin (Kaleido Ruby) and Luvia (Kaleido Sapphire). <<less

The year is 2095. Magic has been tamed as another form of technology, and the practice of magic is now a rigorous discipline. Brother and... more>> sister Tatsuya and Miyuki Shiba are just about to start their first year at the renowned First Magic High School of Japan. But the school's ironclad rules mean that the brilliant Miyuki enters the prestigious Course 1, while her older brother, Tatsuya, is relegated to Course 2--and that's just the beginning of their troubles. <<less

"Three years ago, he had the same posture.... more>>

Three years ago, he had stood behind Miyuki.

Yes.... Compared to three years ago, it had changed."

Set three years prior to the present time, Tsuioku Hen tells the events that would change Miyuki's world drastically, as well as the events that led Tatsuya to become what he is now.

Adaption of Light Novel V08 <<less

A trap with a huge brother complex tries to seduce his older brother.

High-school girl Yuri suddenly finds herself on the rooftop of a high-rise building. She's trapped in a bizarre world surrounded by skyscrapers, where a masked... more>> man cracked open a man's head with an axe before her eyes. Finding a way to survive this bizarre world, find her beloved brother, and escape becomes her top priority, but she is beset by danger not just from the mysterious Masks, which possess both inhuman strength and cruelty, but other survivors turned cruel or desparate by the insanity of the high-rise world. <<less

With his phrase "don't you dare make girls cry," Makoto Tobita has failed his 30th confession, but that won't stop him. Promising to do anything... more>> for the girl who smiles at him, no matter what it is, what will happen now when the alien fighting - giant girl, Mana Eimiya, is in love with him? <<less

Meet Kanade Nakamori. She always goes grocery shopping for her mom. But always gets sarcastic remarks by a boy who works there and goes to... more>> the same school but he's younger than her! What's his real reason? <<less

Kikukawa Shiori wakes up from a motorcycle accident only to find out she's lost her memory! Try as she might, she can't remember anything about the yankee-looking boy who claims to be her boyfriend, her kind-hearted and good looking older brother, or her aloof and introverted younger sister.... more>>

When she goes to school for the first time since her accident, she overhears people talking about her---and the things they say aren't flattering. From what she hears, she was a terrible person before the accident. Was she really as horrible as they're making her out to be? And will she ever get her memory back? <<less

Demons, they are born from stagnation, fear, hatred, and sorrow. Attracted by negative emotions of humans. In this world there are people who were able... more>> to fight against them, they possess the skill of a secret art. Transforming their soul into a blade, they are called Onmyouji. <<less

Yating was working in a recording company until she was fired by her boss (a famous movie actress with a spoiled temperament). Discouraged and jobless,... more>> Yating decided to work in a pub where a famous group called "Gangster" regularly played. Along the way, she gets to meet this guy who has the most divine voice. Yating's luck then began to change when her uncle decides to retire and set up his own record company. He asks her to join in his ambition to create the most famous rock group in Taiwan. This is the story of how Yating, being the new manager, tried to create the ultimate rock band! <<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!!

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

Kayano Meguru has a bit of a brother complex. Her love for her brother is so strong that she has removed the idea of any romance with any other male other than her brother from her mind. ... more>>

One day she passes out and awakens 2 years in the future! To make things even more confusing for her, she is dating someone other than her beloved brother!

Including OS <<less

Fudatsuki Kenji is known in school for two things: for being a delinquent and for having a sister complex. He constantly follows his sister Kyoko around, fixing her giant ribbon and chasing off any boys who might be interested in her. However, the truth is much stranger than people believe. He actually doesn't have a crush on his sister-- in fact, he likes Hibino, the only girl in class who isn't afraid of him. ... more>>

The problem is that his sister is literally a monster. She's a (Asian vampire/zombie), who is much stronger than an ordinary person and who needs a certain amount of blood from Kenji each day. Her ribbon keeps her in check, but if it comes off, she instinctively attacks the nearest person. Her ribbon also has a huge affect on her personality. With the ribbon, she's irritable and sharp-tempered, but without it, she's extremely sweet and apologetic (while she attacks). Will Kenji be able to keep his sister from hurting anyone, and maybe find some way to overcome his sister-complex reputation enough to have a chance with Hibino? <<less

A series of unrelated short stories about sisters with brother complexes (and in some cases, the brothers also have sister complexes).

A older brother with a serious brother complex for his little brother, made it a point to dress his little brother as a girl, as... more>> his little brother got older, the love for his older brother fades. This is a comedy between a brother obsessed with his little cross-dressing brother. <<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

Ikezawa Sumire's three elder brothers, Asagi, Ai, Kon are so beautiful even friends get jealous! Sumire too loves Asagi and Ai, but for some reason she just can't like Kon. That reason is...!? ... more>>

Adoptive siblings love. <<less

"One such setting is the "Nine Schools Battles", officially called The National Magic High School Good Will Magic Competition. Every year, the best Magic High School students gather together, unfolding a story of frustration and glory by putting their young pride on the line."... more>>

Adaption of Light Novel V3-V04 <<less

Yuu is famous for having an extreme brother complex. In reality, she has emotions for her little brother, Hiro, which have far exceeded a normal... more>> sisterly love. A little complicated family love comedy from the author of "Hyakko." This is a story of forbidden love with an older sister, a younger brother and their half sibling Tomo as well. <<less