Prequel of Freezing following Chiffon "The Monster of West Genetics" Fairchild

Freesia is set in an alternative Japanese society that is at war, and has passed a law legalizing retaliatory killings. If somebody kills your loved one, you are legally sanctioned to kill, or hire someone to kill, the perpetrator. The manga is set around a character who works for a firm that specializes in these retaliatory killings.

From PROzess:

Sakurai Sakuya is a first-year student that hates summer. One day when he's verbalizing his hatred towards the sky, he is spotted by Kisaragi Haruka, a second or third year student. (It's only said that she's senior to Sakuya.) Haruka is the only member of the art club of the school and ask Sakuya to model for her. He agrees not knowing it would be a nude model. Sex ensues. Sakuya thinks that this is the end between them, but Haruka warmly sees him off with the words "See you tomorrow". Thus their fragile love begins.

A SF/horror manga that takes place in 2200. At a chicken manufacturing company, a certain chicken transforms into a supermutant named Chicken George. And so, a nightmarish journey through a twisted version of the future unfolds.

Mariel Imari is a private eye trying to become a first-rate detective to be able inherit her late father's estate. For some strange reason, the mysterious thief Vecchio is taking an interest in her. As if that wasn't enough, her old friends at Interpol and her siblings make life more troubling for her.

Okama shall teach you the nutritious value of girls and food!

A salaryman's life gets turned upside down due to a dramatic tragedy, and now he is going to have a summer adventure the entire city will never forget.

Kaoru, a single woman in her thirties, meets a magical frog that gives her the chance to live as a housewife. A really cute short story about being happy with the life you have.

One day, a ronin student on his way home gave a bentou to a cosplay cat girl. Unexpectedly, the cat girl then decided to stay at his house, resulting in the two living together. But then, the girl turns out to be one of the mountain shrine's Gods…

Having to deal with the girl’s magic plus the teasing from other cats and Gods keeps the main character’s hands absolutely full. Will he ever get a break or will this “big pet” burden him forever?

Miyano Amata, known as the "Perfect Prince" for his intelligence, looks, and cool personality, is asked to substitute for his sister as an attendant at a doujinshi convention disguised as a loligothic girl. There he meets a girl from his class and they become friends, but he must crossdress in order to be with the girl while learning about the fujoshi fandom.

Notes:

? Fudanshi = BL fanboys: Some may be gay, some may be straight. More info can be found here.

? Fujoshi = (Literally) Rotten girl: A pejorative Japanese term for female fans of manga and novels that feature romantic relationships between men, often with the implication of yaoi concept.

From BH007: One day, in the middle of (Tokyo), the Hell's Gate appeared. In the area coverd by the gate, the laws of physics do not apply. Furthermore, people living nearby have begun to develop supernatural powers, and are known as contractors. Among these contractors, is BK201, a contractor with power over lightning who is renown as one of the strongest reapers and for some reason, hated and hunted by most major world organizations...

Fear runs rampant throughout Tokyo with the revelation that demons in fact exist amongst us. Paranoia and the darker side of humanity boils onto the streets as people turn on one another, suspecting that anyone could in fact be a demon hiding in human clothing. Amidst the growing tensions, tragedy strikes Akira causing his mind to snap, retreating into his subconscious, allowing his Devilish alter-ego Amon to break free from Akira's cage of flesh and wreak havoc on both human and demons alike.

Meet Natsu and Hana, the two young women who are the managers of a beat-up apartment building, as they try to find tenants, upkeep the place, and generally have a good time.

Alita is a powerful cyborg with a soft heart and a mysterious past. Her second lease on life isn't easy: her heart is broken, she gains and loses friends to the cruel world of the Scrapyard far below the Utopian city of Tiphares, and she serves many masters in her quest to protect the innocent and create a new life for herself.

The man whose eyes are re-awakening, Yoshiyuki. At the age of 18 years old he lives a life of hopelessness, and thus visits the host club “Platinum” in Shibuya. They all thought it: “Yoshiyuki wouldn’t be suited to a become a host.” At that time, only the number one host Taku looked into his eyes and saw that they were different from those of ordinary men…

Aki Sora revolves around Aki Aoi and Sora Aoi, a pair of close siblings who have shared an intimate bond since childhood. During their coming of age, they each come to realize the true depth of the love they feel for each other and consummate that love in secret. They keep their younger sister, Nami, Sora’s twin in the dark about their new relationship. Nami, clueless of what is happening in her household aims to set her brother up with her best friend, Kana Sumiya. Despite these relationships Nami seems to have feelings for someone near to her too but keeps them secret.

Note: The first and third volumes will no longer be printed following July 2011 due to the Tokyo Youth Development Ordinance bill due to its depictions of incest.

A Tokyo Ghoul spin-off about the ghoul investigators Arima and Fura during their high school days.

Hajime lives with the twin sisters of the family of the Komatsu shrine. Inori is of a very spiritual bent and often tries to use her 'powerful' heirloom rosary to protect her friends and family from evil. The other sister, Kanau, is more practical. She often spends time trying to keep Hajime from groping women, which he is always doing by accident.

Amidst strange vampire-like murders in the community, Hajime has had a dream of a hot female demon called Satan that is lusting after his blood. Soon enough, she appears in his waking life, along with her alter ego Lucifer. After an embarrassing situation at school, Hajime and the shrine twins end up taking Satan/Lucifer into their home. Why are these demons attracted to Hajime, and what do they really want?

From Kotonoha:
Koume Sato and Kosuke Isobe are two teenagers living in a sleepy seaside town. After getting used and dumped by her crush, the emotionally damaged Koume decides to start a sexual relationship with Kosuke, without any emotions involved. However, they both soon discover that sex with no strings attached does lead to unexpected complications, not just for themselves but also the people surrounding them.

From Tokyopop: Yuzu would very much like to be a regular girl, but unfortunately for her, she and her sisters are miko priestesses at the Asagiri Shrine, and their role is to keep the spirit world in balance.