Change 123 follows Motoko Gettou, a not-so-average teenage girl. Orphaned at an early age after the death of her mother, she was taken in by her "three fathers," each a master of a different style of martial arts or combat-training. Under the care of each parent, a young Motoko was subjected to excessively rigorous training. So much was the physical and mental strain that Motoko developed three split-personalities, known as the HiFuMi, consisting of the ever hard-headed Hibiki, quick and agile Fujiko, and cute and immature Mikiri, each individually skilled in combat skills learned from each master. One day, a man begins to harass a terrified Motoko, now in high school, as he catches her alone down an alleyway. A classmate of hers, Teruharu Kosukegawa, tries to help Motoko, only in time to watch as an infuriated Hibiki kicks the harassing man directly across his path straight into a car. Returning to herself, a shocked Motoko promises Kosukegawa she will do anything if he doesn't tell her secret. From here poor Kosukegawa must manage a flurry of combat fighting and ecchi madness as he is brought along for the ride of his life into the chaotic lifestyle of HiFuMi. But what initially developed as a friendship seems to have become more to Kosukegawa as he longs to tell Motoko his feelings for her -- if he can manage to survive long enough to confess, let alone find the opportune moment. What will transpire? From Baka-Updates: In Change 123, we meet Motoko, a girl with a very strange problem. In order to cope with her 3 adoptive fathers' incredibly intensive training methods, she developed multiple personalities, each with a different martial specialty. But what happens if none of them can beat her opponent on their own? And what further nugget of wisdom will be imparted by the great Kamen Raider?

Shik-nam is a student that's obsessed with his grades and studying, so much so that, for him, solving problems and equations can reach erotic levels. Needless to say, his interest in anything other than his studies is near zero. Then comes a complication. The animal kingdom is furious with what the world has become, so they sent Yegrinna, the dog princess, to punish the sinful humans for dirtying the world by turning them into animals. And out of all the places she appears, it's at our unfortunate protagonist's room. What awaits Shik-nam and Yegrinna now that their fateful meeting has set into motion plans long since in wait?

A series of unrelated short stories about sisters with brother complexes or vice versa

Hayashi Shoutaro is an otaku and a student who sucks at studying, the results showing on every test; if that wasn't the worst, he makes promises like the one who scores the lowest has to clean the classroom by themselves. In his classroom there is a girl he likes, Kanda Yayoi, who always scores the top and is popular among boys and girls. After going home from cleaning the classroom, he's met by his perverted/otaku sister who has him cross-play (cross-dressing cosplay) to go to an anime merchandise display, where he meets Yayoi who is also an otaku and she falls in love with his cosplay-persona...?

Mizuhara Ritsu loves both the 2D beauties of eroge and elementary school students. Also, his friend Bungo is jealous of how he seems to be surrounded by cute girls--there's his little sister Miri, his tsundere childhood friend Akari, and kuudere Hatori. One day, Bungo tells Ritsu about an anonymous blogger who writes about the future, and whose vague online self-description seems to match Ritsu. While initially assuming it to be a prank, Ritsu ends up letting his actions be guided by the blog's horoscope-like hints for the upcoming day...

Hiromi can't wait for her cousin Makoto to come live with her - but when "he" finally shows up, she gets a good deal more than she bargained for. Toshiki Yui turns a hentai fetish into the plot hook of this high school situation comedy.

Collection of Blame-related short stories: • Zeb-Noid A bloody war that spans millenniums. Two soldiers set out to kill each other. An encounter that could change their two species’ fate forever. • Blame Academy! • Blame Academy! - Tokyo and Nara Under One Umbrella • Blame Academy! - Under the Tower of Blooming Sakura • Parcel • Blame! NSE (NSE: Netsphere Engineer) The much-awaited sequel to BLAME! follows a man, called a Dismantler, who is in charge of sub-dividing the nexus towers that incurr Safeguard interference upon its detection of humans without the net terminal genes. Although humans are once again able to reside in the Net sphere, the Safeguard are still a threat. The Dismantler or NSE, or Net sphere engineer, goes on a journey to aid mankind in their survival. • Pump • Blame!² The protagonist is a descendant of Pcell. This story happens a long time after the events of Blame!. This young silicon creature knows well the havoc that Killy brought and decides to move towards the end of the megastructure, to look for him. • Numa no Kami • Winged Armor Suzumega While it’s not explicitly mentioned in the story, it’s believed that Suzumega is at least somewhat related to Abara since it features the Gaunas. - Kotonoha

Taken from Baka-updates: This is the story of Nanase Iruka. She's short, tomboyish, and her one joy in life is volleyball. On Iruka's 17th birthday, her Volleyball club is disbanded. Feeling somewhat depressed she and her friends from the club take a trip to the beach and discover Beach volleyball. Iruka can't wait to play and rushes to the court only to be told to give up being a player because of her short stature by the local Volleyball Diva. In a rage, Iruka challenges her to a match to prove her abilities. It doesn't look like she has a chance, but Iruka has a secret weapon, and nobody will ever make fun of her on the beach again....well....Not about her ability to play Volleyball anyway..

On the world that consists of a single giant continent called Dokkanon, most people have some kind of special ability. Those who have a high-ranking ability, such as the ability to control water, are respected and granted much power. Those with low-ranking abilities, such as Nana, who controls bananas, and her best friend Ringo, who has super-powerful legs, have very little power in society. When Nana and Ringo were kids, they were awed by stories from Ringo's adventurer father about a land called Oz, where a god lived who could make any wish come true. Nana and Ringo swore that they would go adventuring together when they were adults. But as time went by, Ringo's father vanished while adventuring, and Ringo became much more aware of the social stigma associated with adventurers. Will the two of them find the strength and courage to follow through with their promise?

It's about a high school girl, who is always having pervert fancies. One day, she falls in love with a plain-looking boy and tries to date with him. 4-panel manga

From [Dynasty-Scan]: Yousuke and his sister were orphaned at a young age. Yousuke's sister was adopted ten years before the start of the story, since then, he has been looking for her. One day Yousuke found the couple that adopted his sister, the problem is that they have two daughters, Ayu and Mayu, both of which were adopted from the same orphanage and are roughly the same age. Both Ayu and Mayu had an older brother before being adopted. Things get more complicated when Yousuke learns that the orphanage where he previously lived was burned down a year earlier, destroying all the records, and that the couple's own records have disappeared. Yousuke must figure out which one of the girls is in fact his sister.

A boy swordsman, Yoichi and his father stays in mountain training for his descent from the mountain. Yoichi comes to the city to lodge and stay with 4 beautiful sisters. A new more severe "training" regiment awaits him. From Wiki: After learning martial arts in the mountains for 17 years under his father's teachings, Yoichi Karasuma's father orders Yoichi to continue his training to strengthen his spirit with the Ikaruga family in the city, as he has nothing left to teach him. The current head of the Ukiha Divine Wind Style Swordplay school of martial arts, Ibuki Ikaruga, and her siblings gradually accept Yoichi as a freeloader at their dojo. In addition to domestic problems, Yoichi deals with Washizu's jealousy of Ibuki and Yoichi's supposed relationship and his school life.

Aoi Destruction is a compilation of short stories by Kazurou Inoue (Midori no Hibi and Aikora). The first 3 chapters are dedicated to the title story (Aoi Destruction). Story 2 is 'Rare Bookshop Owner Yakou's Hard-Fighting Chronicles'. Yakou was left to run his father's rare book store and bitterly resents it. Then a super-hot babe walks into his store. She's a "book-detective" and tells him she's taking over the store so Yakou can pursue his family's heritage--the "other job...". Story 3 is 'Full Scratch Eiji,' about a boy who tries to get away from his otaku past. He was a legend among figure makers, "E-Model-san," until a girl rejected him for being too "otaku." Yoshizaka is easily the big man on campus; adoring girls throng about him. Jealous boys chew their livers. Then he stops to help a goofy girl--who is thrilled to meet "E-Model-san"! She could ruin everything; he has to shut her up! Story 4 is 'Otone no Naisho,' a story about a young samurai girl who finds herself the owner of a perverted possessed katana. Not for kids.

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

From the creator that brought you Ichigo 100% and Hatsukoi Limited comes her latest series: Ane Doki. The story centers on a 13 year old boy who is pushed around by a mysterious 17 year old girl. First she forces him to let her move in with him, then she takes his bed and that's only the beginning. What's in store for this innocent 13 year old boy whose life is being throw upside down by this girl!? From Baka-Updates: Ah, the dream of 13! Kouta is our normal everyday boy, living with his fun-loving workaholic father. Lusting after the school idol in his class, playing games with his friend... there's nothing especially noticeable about him. But one day his father has to transfer to Sapporo and then appears a girl who volunteers to be Kouta's live in caretaker. And what a girl! Everything about her is mysterious: her mysterious incredibly showy body, her mysterious interest in our boy, and her mysterious need to sleep in the same room... Doki, doki...

This is based on the dating simulation game, Amagami (Gentle Bite). The special focuses on Sae, Ai and Miya, three adolescent girls who are trying to understand their changing bodies and learn how to be "sexy". The chaptered version begins with the story of Tsukasa Ayatsuji, who is the overachieving class representative and planner of the school's Christmas party, and her classmate, Tachibana, who finds himself offering to help her...

Ikko's finally home after a long trip at a training temple and everybody is glad to see him. But this sequel has a big twist. Since Jotoku is gone, Sakura is in charge now, and Kazuki has moved in with Ikko and the rest of the girls at the Saienji Temple! Will Ikko ever survive this kind of life? Follow the unnormal life as a monk in this Ecchi, harem comedy manga sequel of the popular Seinen manga from Japan, Amaenaideyo! It'll make you nosebleed and laugh at the same time.

From Baka-Updates: Aoi Kururi is an onmyou-ji who is studying smells at a private academy. He in fact hates using onmyou magic, but when a spell is mysteriously cast on his whole class that causes everyone to wet themselves, he finds that with the warm power and sweet smell of girls' urine, his magic becomes more powerful, and he saves his class by breaking the spell. This is the story of the strange misadventures of Aoi, his sisters, and his friends.

The story revolves around a typical high school boy named Kakeru Daichi and the can of melon juice soda that he bought from a vending machine. The can suddenly transforms into a beautiful but standoffish girl that Kakeru nicknames "Melon," and more "Akikan" ["empty can"] girls appear. However, Akikan girls need to be infused with carbon dioxide from kissing to survive. (from Animenewsnetwork)

From DrMaster: Yuji Midorikawa is your typical high school student whose has a secret identity: He is "Green" in the high school battalion unit, Gakusei 5 (G5 for short). G5 is the special unit trained to fight and protect Earth against the invasion of the dreaded Galactic force "Gurdark" and its sexy queen Mayura. But Green has a problem. He really can't fight, and always ends up hiding behind his other team mates. What ensues is a witty and wild ride as our "Imperfect Hero" struggles to maintain his reputation as a "guardian of earth" while keeping up his grade point average in school!

The minister's aide has an idea, a project in mind to help correct the declining birth rates in Japan. This plan, so to speak, has it where Japan's youth are encouraged to form relationships. The catch is that at the chosen highschool for the initial test of this is being held, the project is mandatory — the students must become intimate couples with the other students or they will die.

Souta Inui is a manager at Megapro talent agency, an agency responsible for turning young, beautiful women into stars. Inui, however, spends his time at the office ogling posters of the idols his agency manages, and has yet to bring in any new talent or take on a single client himself. When told to go to the streets and scout talent, Inui falls and unwittingly grabs ahold of a devil girl's tail, at the same time asking her to join his talent agency. Now bound by contract, the girl has no choice but to abide by his wish, making it her goal the become the number 1 idol in Japan. But who is this girl? Why is Inui the only one that can see her tail? Is she really a demon aged many thousands of years? No matter the reason or history, it's now up to Inui to turn this aggressive devil with a (literally) killer voice into the number 1 idol in Japan.

Despite her family's protests, Aoi Sakuraba decides that she is going to marry Kaoru Hanabishi, her love of eighteen years. Once he realizes that her intentions are genuine - and that she's not just trying to get him to reconcile with his estranged (and domineering) family - he begins to definitely warm up to the idea, too. What obstacles must the two overcome in order to be together?

Hitoshi Kobe is a terrible student and an even worse athlete ... though he does have an incredible talent for creating Artificial Intelligence programs. Thirty is his best artificial intelligence program yet -- and, more important, the only girl who will talk to him. Hitoshi's life is forever changed when a freak accident brings Thirty to life ...