From 1st Chapter:

The lead character is a naive boy who's fallen in love with an older girl who everyone considers a genius writer. He's so in love in fact, that he has forgotten for the last 2 months about his secret hobby. For the past 10 years he has been writing the "character profile" of a single girl. Her birth date, personality, hobbies, conversations, etc.... is all recorded in a large pile of notebooks. All this time this fictional girl has been his friend and lover, but now that he is in love with a real girl he decided to throw them all away.

In order to "purify" the notebooks, he decided to burn them at a nearby shrine. To his surprise, the senpai he's in love with was also there. It starts to rain and as they talk the girl confesses she's having trouble writing her novel due to inexperience. As the storm gets even stronger, the lead character believes that since she confessed her "weakness" to him it is OK for him to show her his own "secret". Filled with courage, the boy opens the bag where he brought all the notebooks... except that instead of notebooks, the bag now contains the girl (naked of course) he's been creating for the past 10 years!!

From Nakama:

A strange household made up of two divorced fathers with a child each. As the children get older, they start to become aware of the strangeness of their own household…?! Following the popular BL about fathers with children, “Kodzure Ookami”, the children become the main characters as we follow their growth, in this long-awaited next volume! Also, a straight-laced tax counselor who is also an idol otaku, and a show pub owner of questionable identity (only half Japanese and also an onee); their fateful meeting and subsequent circumstances. This is the well worth-reading 3rd compilation in the series of this author.

Mayama Haruki and Himemiya Tsukiko have been childhood friends and neighbors for as long as they can remember, but after a girls-only meeting in fourth grade, Himemiya distanced herself from Mayama. Now in their 2nd year of middle school, Mayama has become an ero-freak who specializes in harassing Himemiya. Determined to unravel the greatest secret of girls, what happens on "that day", Mayama follows Himemiya and uncovers.

Comical sidestories from within the main series' timeline and featuring some new characters.

Collected in Volume 28 of the main series.

The hilarious misadventures of the "Sket Dan"; a couple of high schoolers who help out people as part of their club activity: Himeko, the hot-headed ex-delinquent with a soft spot for cute things and a taste for strange food; Switch, the brainy otaku who only talks via a computerized speech-application; and Bossun, the atypical leader of this looney bunch, with the amazing power to... concentrate very hard!

Sket Dance won the 55th annual Shogakukan Manga Award in 2009 for best shounen manga.

A story about two hamsters?!

N/A

Now, an entirely new kind of lifestyle has been created.

Teenager Hideki Yuu finally musters up the courage to confess to his crush, Miki, only to have her reject him. Three days later, she becomes an idol...

Fujisawa Toru’s debut manga.

From MoonFlower Scans:

Mustuki Yoneya, a high schooler, feels insecure and jealous because her constant companion and best friend, Nishio Kyuteki is starting to pay attention to a beautiful upperclassman. Seeing the senpai's attractiveness as a threat to her wish to remain at her best friend's side forever, she tries out several attempts as she strives to become the main object of Kyuteki's attention.

Note: Original language image is not available.

This could be any girl. Imagine being a heroine of a love story. Hatori also believed that one day she would get married to her childhood friend, Rita.

But that's not how the world works! This is a hilarious comedy that honestly paints a painful unrequited love story of this young girl!

1-4) Ai ga Love Shite You nanosa
Oono is unable to properly do his uniform check job because his adoration of Takeuchi distracts him, and Takeuchi mistakes this for Oono hating him and is sad at the idea of being disliked by the model student. Thus, Takeuchi is relieved and willing to reciprocate when he finds out that it isn’t hate but instead love that makes Oono so very awkward around Takeuchi.
from hazukashiikedo

5) Shiritsu Koukou Hetarebu

6) Nare Somehen

Bakuten Shoot Beyblade = Beigoma (a Japanese spinning top game)

Takao Kinomiya dreams of becoming the best beyblader in the world. Along with his friends Kai, Max, Rei, and Kyoujou, they make the team known as the Bladebreakers. They strive to be the best but don't do it alone... because within each of their beyblades resides a Sacred Spirit that gives them even more power to reach their goals.

A lightly paced manga about two girls who live together. A classic odd couple setup featuring a responsible character with a caring atmosphere and a more free spirited musician who has trouble both feeding herself and paying the rent.

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 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...!?

Two boys, Mitsuhashi Takashi and Itou Shinji, meet each other at a salon. It turns out both boys are transferring to a new school and decide to take the opportunity to reinvent themselves. No longer will they be run of the mill high school students, they will become the biggest delinquents Japan has ever seen!

From Bliss:

While buying food at the supermarket, Sunao Morihara gets kidnapped by a strange man, Kuon Tachibana, who turns out to be incredibly rich! His motive? He wants Sunao to be his friend. However, before Sunao realizes, being Kuon's "friend" actually means becoming his wife!

Two Brothers are climbing a mountain to learn a secret fighting technique from an old man. Three years later they are returning to their village ...

Kyoko Suomi is the princess of Earth in the 30th century. Kyoko goes to school among the commoners, unwilling to reveal her true identity and ascend the throne. The king will allow Kyoko to live as she pleases if she can revive her twin sister Ui, who has been trapped in time since birth.

From Shinnen:

The Hachiouji family hunts demons in the darkness. The heiress of the Hachiouji family, Takamichi, lost her older brother at a very young age. She isolates herself, but, one evening, two werewolf pups are given to her. After just a few years, they have grown quickly, and they even go to the same senior high school that she does!