From Intercross: After her grandmother passed away, Tsuji Ayame became all alone. She got taken in by a relative... However, something strange happened after that!?
From Anime News Network: The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Redo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space. Waking from his artificially induced hibernation, Redo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Redo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Redo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him.
From Baka-Updates: Because Shinjo Mayu stopped her job relationship with Shogakukan, she continued her incomplete manga in Asuka and called it Ai Ore! This can be considered a continuation of Ai wo Utau Yori Ore ni Oborero! or even as a second series as it introducing a lot new character and unrevealed past When Akira announces he was a boy in the first book "Ai wo Utau Yori Ore ni Oborero" so does the fact Akira goes to Dankaisan the boys school next to St. Nobora (Mizuki's school) Things start to get rough when pressure against Mizuki dating a boy from that school rise. + Highschool of the dead manga + Kobato manga
After a crazy night, a young teacher is tricked into becoming the father of two gorgeous young girls.
From MegKF: Despite repeated rejections, Shinatsu fell in love at first sight with the most popular boy in school, Yoshiyuki-sempai (a member of the tennis club). After unhesitatingly joining the team, she gets rejected by her sempai. On top of that, she is bullied by his girlfriend. However, as her childhood friend Iku, says, "Things that are too easy to obtain aren't amusing at all." Right?
From Fateful Encounters: Oh Chun Ja, a timid girl, has just transferred to a new school and started her new life. Nevertheless, the first day didn't come easily as she thought. Not only did she go to school late, but she was also bullied again. To make it worse, she had to sit next to the Devil King Lee Seo Lu. And now he even offered to help her by teaching her how not to get bullied. Thank goodness that the young and handsome gym teacher is there to make Chunja's life a little bit brighter.
Salaryman Miyasaka harbors a secret love for his childhood friend, manga artist Minami. He knows that someday Minami will find a girl and he'll have to say "Congratulations", but so soon?!
From Aerandria Scans: When she merges her soul with that man, she will become the Goddess of War! Itsukushima Hinata is a cool high school girl who lives a normal life, but one day, all of a sudden, her life became not so normal anymore. The strange man that suddenly appeared insulted her best friend and enraged her. He's a mysterious man who has a costume like that of someone who just woke up from a sleep from the ancient times. While Hinata is still confused, that man hugs her out of the blue! And then, she transforms...?!
From Serenus Dreamers: Aoi - a girl who lives in a household of seven. Her current status? Poor. Masafumi, dubbed the Prince of School, lives in a mansion with a household of mostly servants and his grandparents. His current status? Rich. When Masafumi decides to throw away 40 cents which Aoi could have used, she's enraged at his action of discarding the valuable amount, and vows to never forgive him! But, what happens when fate brings Aoi to the Prince's door, in place of her mother, who is injured? Revenge? Schooling in the antics of the poor? Extra: That is Why we Dream - Nakahara has a habit of setting things on fire, she coops herself up in the art room and never smiles..she is also a young and famous artist. While setting fire to another object, she meets a boy, who is a young and famous basketball player...why does he give her so much attention when everyone else shuns her? and why does she seem so sad while painting?
Kugaya is a teenager who lives with his aunt, Sakuri. The kendo coach at his high school, Narugami, has been after him to join the kendo team; but when he meets the new girl, Takemi, his life takes a supernatural turn and he is thrust into an epic battle with the demonic "Intruders". Reincarnation... buried memories... the Holy Sword... "Himuka"... and the Clan of the Swordsmen... it's all too much for a high school student to bear!
Sakurai Aya's "Whisper Under the Roses" is a school story set in the early 20th century.
From Aerandria Scans: The heir of the huge Fushiki corporation, Tomoe, comes to Japan as an exchange student. He is his father’s youngest child and on top of that - his mistress’s child, but he was still appointed as heir. There’s danger that people will aim for his life. They attach to him a new maid, with glasses, naturally clumsy and ill-mannered... who turns out to be his new bodyguard, defending Tomoe with her mop!