Utsutsu and Yume Hasegawa have been living all on their own. One day, Yume sees red butterflies and something strange happens to her body!! As the siblings are toyed with by “Pupa,” so begins their tale of heroic love... (From JManga)

A boy loses his parents in a supernatural disaster known as a "Curse" and is then adopted by the Tsuchimikado family; a family that exorcises curses. Ten years later and the boy has become the head of the family and now goes about exorcising curses all the while trying to balance his job as an exorcist and his life as a student in high school.

From Lucia Rose: Natsuno Sarasa is painfully shy and is afraid to speak her mind, but as the summer music festival rolls around the corner, she prepares herself to make some new friends. However, just when she begins to lose hope, a boy in her class asks her for one of her tickets to the festival. Hourai Yayoi isn't the kind of new friend she was expecting to make, but...?

From asdf scans:

A bunch of love problems surround her life. Futamura Umiho is a girl with a weak personality. A new flower is about to bloom! A fresh and inspirational story is blooming. A love between flower and thunder!

This is a tale about a floating continent . 6 years ago , a disastrous monster attack marked the beginning of mankind's extinction . This is a story of the remaining survivors who struggle to fight and learn about these mysterious monsters as they prepare for a great counter attack . Will they succeed and regain their rightful rule of the continent? Or perish before these monsters.

This series is about Rio, a college student who has been in love with her best friend's father, the pharmacist who runs Izumi Pharmacy, ever since she was a kid. As for Izumi-sensei, he's also attracted to Rio but has been holding back because his son is also in love with her!

"Abnormal" is about people that live in a world that can only be seen by those who live on it, but what happens on this world will save or destroy the future of humanity. A slavery-addicted girl named Seimina Yuri find out that she is an Abnormal and starts to fight in this world for her own survival, until she discovers that the world will need a new god.

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An extraordinary luxurious, legendary school that evokes envy! A complicated student life will now unfold! Finishing her studies abroad in England, Cai Ying and good friend Gong Liang Hui are traveling on Eli Academy's ocean liner to return to school. At the pier, as they are preparing to board the ship, they run into a mysterious pretty boy who is being pursued...?

In the Shitsuji series:

V.1 - Shitsuji wa Daitanfuteki ni Uso o Tsuku (The Butler Boldly Lies)

V.2 - Shitsuji wa Shirokujichuu mo Ai o Sasayaku

V.3 - Shitsuji wa Mondou Muyou de Kuchibiru o Ubau

V.4 - Shitsuji wa Denkousekka de Amaku Dakishimeru

V.5 - Shitsuji wa Yuiitsu Muni no Koi ni Oboreru

V.6 - Shitsuji wa Isshin Furan ni Hada o Motomeru

From Viz:
140 years ago in Kyoto, with the coming of the American "Black Ships," there arose a warrior who, felling men with his bloodstained blade, gained the name Hitokiri, man slayer! His killer blade helped close the turbulent Bakumatsu era and slashed open the progressive age known as Meiji . Then he vanished, and with the flow of years, became legend.
Ten years later, a young woman's life is saved when she happens upon a strange wandering swordsman named Kenshin. The young woman accepts the wanderer into her dojo, despite his secretive past, and the two become fast friends. As their relationship grows, they meet and make more friends (as well as enemies), and they grow accustomed to their life together.
However, one man can only run from his past for so long, and it isn't long before Kenshin is forced to face the life he thought he'd left behind. Now, together with his friends, he must fight the ghosts of his past if he wants the people he loves to have any kind of future.

Contains a side story called Yahiko no Sakabato.

The protagonist, Houkou Hayao decides to take a job interview at a family resto, Berry's, in order finds out what to do when he graduates.

On the same day as the interview, he bumps into a certain "ojou" who just got out from the interview room in a bad mood, and binge eats at Berry's. He later ended up hanging around with her. When he gets home, he finds out that Yuuka, his "imouto," has found out that he got a job without her permission.

Later, he learns that the binge-eating girl which introduces herself as Morikubo Yuna he met is a new employee like him.

Suzuko Hasebe, a grade 11 student, has been on a consistent transfer from one school to another (due to her father's work) before transferring to a private school. When she arrived, she saw an empty desk sitting by the window of the classroom and was given permission to sit there. No one has sat at that desk for 5 years, and strange things are about to occur.

Yukino Shiroi is the new cute girl in class, the kind of girl Kyousuke Kai can only dream about. Yet somehow they wind up going out together. It all seems too easy. But the girl has a secret: she draws the most ecchi manga he's ever seen. It's hard to say what will explode first, his heart, his mind, or something else...

Each of this manga's chapters features a new girl. The first chapter starts out with Ichikawa, who mysteriously has a shounen manga show up on her torso each week, a malady she shares with her male classmate, manga-fan Aoi. The second girl, Kawamura, notices that a boy in her class is suddenly being duplicated!

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A princess who holds a piece of a legendary treasure map known as the "Stone of the Sea" willingly joins a famous pirate in order to avoid becoming the twelveth wife of some 72 year old king...

(~from manga-mania)