From ANN:

The story of the comedy manga revolves around Yūji Yugami and Chihiro Watanuki, who sit next to each other in class. Unfortunately for the transfer student Chihiro, Yūji is weird... extremely weird. Even though he's the ace of the baseball club, he hasn't adapted to the club at all. He also stands apart from the rest of the class, but seems completely satisfied with being alone.

The manga focuses on a certain unnamed character who appears throughout the story of A Certain Scientific Railgun and A Certain Magical Index, and whose name is revealed in this story set at Tokiwadai Middle School.

This love is too heavy!!!

Lutia, the reincarnation of the Holy Sword Exceltier, was just a normal girl working for the guild. One day, the Holy Sword’s former owner and the hero, Ashard, walks into the guild! The Holy Sword Exceltier completed its role after the battle against the Demon Lord but it seems that Ashard loved the Holy Sword too much, even going as far to bathe and sleep with it! If he finds out Lutia is the reincarnation of Exceltier, what will happen to his love?!

Spin-off manga of Yuru Yuri following the four teachers of Nanamori Middle School – Shihoko Azuma, Nana Nishigaki, Tsubasa Minamino and Hatsumi Kitamiya – in their high school days.

Okushida Haruru finally gathers the courage to confess to her crush, Hakozaki-kun. But, the moment after, she blacks out. She wakes up in a pilot suit in a cockpit inside Hakozaki-kun's head. What will Haruru do now?

Ueda Tomoharu is a cop manning a local koban station, and he’s quite happy with his job and relatively quiet life until he happens to run into yakuza member Gotouda Aki while chasing down an underwear thief… and is suddenly confessed to! Aki doesn’t seem bothered in the least about their star-crossed lovers status and eagerly dives into a super lovey-dovey relationship with his policeman, but Ueda’s about to find out just how dangerous it can be dating a mobster… in more ways than one.

Hark! The city is in peril! Who you gonna call? The Colors!

Sacchan, Yui and Kotoha are here to protect the city, solving mysteries and battling enemies with help from their friends.
But their quest isn't an easy one as their arch-nemesis Saitou, the violent police officer of Ueno, meets them at every turn.

I do not dislike my sister. Any older sister would love their little sister. I have a younger sister named "Sakura no Shin". She is extremely cute. The sister yuri comedy everyone is talking about!

From Shoujo Crusade:

Takeda Una's ultimate wish is to find a boyfriend with whom to spend a romantic Christmas. All her previous boyfriends were weirdos, so she is nervous about being able to find a normal one. Will she succeed in her quest?

*Also includes another story called Umi ga Kikoeru (I Heard the Ocean).

A parody of the popular Prince of Tennis series, it chronicles the daily school life of various characters.

This is the Sequel of Reset Man.

The daughter of the Daites Province's Duke, Milliana, had enjoyed her previous life in modern Japan. However, to despite her present status, she finds life in her present world very inconvenient. Especially, the lack of BL! So she seeks to reform the province's culture to achieve a comfortable life and moe! Eventually, to marry into another family, the disinherited former crown prince, Mathesa, arrived...?!

Her name is Monko. A solitary crow, a wandering soul, a magnificent traveler who roams the roads that are inhabited by bloodthirsty bandits and attractive young people, some of whom are one and the same. At the heart of this wild hinterland where dangerous creatures arise, Monko follows the path she has taken. Despite her devotion to the way of the sword, it is not the Warriors path she chose to pursue. In spite of her intelligence, she does not seek Wisdom either.

Indeed, the quest she pursues is to find the perfect husband. Her path is the way of Love.

Tsubaki, who places an importance of "being cute", picks up a strange fluffy creature and brings it home with her. She brings it into the bath with and it transformed into a naked boy?!

What is going on?

Is Tsubaki going to live with "Fuwa" (as in Fluffy) the alien boy??!!

Shinohana Mayu and Aoba Souma are childhood friends and enrolled in the same high school. There's energetic Mayu surrounded by her classmates with their unique personalities and Souma who always looks out for her. Join in their daily lives in this hybrid childhood friend-school life comedy!
(Source: MAL)

A beautiful older lady regularly visits a coffee-shop where the high school student Hayasegawa-kun works at. He doesn't know her name, her job, or where she lives, but she is nevertheless his "ideal woman".

A young man suddenly awakens in the middle of an open field, with only his lame pajamas as company.
Apparently he was summoned as a “Sorcerer King of Destruction” to destroy the world. What the hell?!
But nothing's going to happen by staying depressed, so why not make a golem with earth magic! And then...?
Exploring another world with the strongest inhuman partner!

1-4) Hungry Monster
Kabutani is a “man-eater” who lives off human energy. One day, he becomes “in-heat” for his classmate, Kiriyama. Though he didn’t believe when his kindred said, “…Nothing compares to the taste of the ‘human’ you love!”, he couldn’t resist a “taste” of Kiriyama… And once he had, he became addicted to that tantalizing taste only Kiriyama can provide. What would a hungry and ruthless Kabutani do to curb his craving…!?

5-6) Love & Kiss!
University student and track and field club member, Haruta Mimatsumori, has had a crush on the track star, Yuichi Adachi, who has since retired due to injury. Now, Adachi-san is coaching Haruta's track club! What an opportunity! Too bad Haruta is rather shy...

Extra) Selfish Monster
More of Kabutani and Kiriyama.

Waking up as the descentand of a Nobel family of traditional Chinese medicine, Han Fei found herself unable to bend down and see her toes.
Later, she found out that she is known as the famous fat woman of the prime minister Han's house, the eldest daughter of the Han family.
And King Qin, who was laughed at and crippled, was her husband to be appointed.
She finds the person born for being a perfect match for her, For the face similar to a celebrity, Han Fei decided that she wants to lose weight, and She's going to have the best wedding!

From Fantasyshrine:

Volume 1:
Reiji has never forgotten Kagami, the man who cruelly dumped him 10 years ago. Now, they unexpectedly meet again! Will Reiji finally be able to let go of his unrequited love, or will his love for Kagami once again only lead him to heartbreak?

Volume 2:
Luciano met the president of a cosmetic company, Munakata, during a party and was offered to become the exclusive model for their new male product line on the spot! However, was there a string attached to Munakata’s generous offer to Luciano? Or did he simply want to get up close and personal with his new model—!?