From DrCoke at MangaHelpers: Even after one month of transferring to a new school, Natsuki keeps her distance from her classmates. Her childhood friend Haruka always tries to push her to be more sociable, but Natsuki just pushes her away. One day, while Natsuki was skipping class and eating lunch on the school balcony, a slime-like substance drops right on top of her. The slime slowly forms itself into... a human girl? An odd relationship between Aoi and her new alien(?) sister Aoi begins.

Keiichirou Mishima is a 15-year-old guy living with his mom until she suddenly decides to fly to Paris to be with Keiichirou's dad. His mom arranges with his uncle Shirasaki to let him stay at his mansion with his two cousins Marie and Tomari, who he met many years before when he stayed with them for a short while. However, Keiichirou has forgotten nearly everything about back then, including why his cousins apparently now hate him.

In order to pay for the debt that his parents left behind, Gin accepts an escort job from the bill collectors of the Tokugawa Group conglomerate. The client is a girl named Hikari who goes to Tokugawa Private Academy. Using the experience he gained from his previous part-time jobs, Gin protects Hikari along with the other escorts, Suke and Kaku. However, Hikari seems to have a hidden secret...!?

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From AnimeWaves: Shindou just became a new investigator for Tokki: The Special Mobile Investigation Force. On the day of his graduation, he finally saw the half-naked girl that he had always saw in his dream in real life and finds out that she's part of Tokko: The Special Public Safety Task Force. Shindou ends up joining Tokko to avenge his parents' deaths, whose bodies were ripped into pieces...

In a time when Gods ruled with cruelty, no one dared to oppose them… A girl was offered to the wind god as a sacrifice. A tribe leader sets off on a journey of redemption while trying to save the girl and make her his wife. Kiron, while defying the Gods will, departs for a difficult journey. Will he be successful? And what kind of obstacles will the Gods throw at him?

Basically, some humans have the ability to negate a sphere of reality, neatly removing it from existence. This gradually alters their appearance until they become a hideous alien, with a giant eye in their forehead.

The story sets one month Eita and Masuzu start dating, and sets itself on a "what if" where the Harem element is stronger than in the original.

Tetsuo Aoki is a 4th year oil painter at a fine arts school. While working in an art supplies store, he meets an older woman named Akira Aizawa, who is the owner of an art gallery. Aizawa becomes interested in Aoki and she begins to pursue him when she catches him painting on the riverside. After such, their relationship begins to develop romantically. Will it develop smoothly? Or will there be unforeseen events?

Monster weaves the riveting story of brilliant Dr. Kenzo Tenma, a famous surgeon with a promising career at a leading hospital. Tenma risks his reputation and promising career to save the life of a critically wounded young boy. Unbeknownst to him, this child is destined for a terrible fate. A string of strange and mysterious murders begin to occur soon afterward, ones that professionally benefit Dr. Tenma, and he emerges as the primary suspect. Conspiracies, serial murders, and a scathing depiction of the underbelly of hospital politics are all masterfully woven together in this compelling manga thriller.

"To Hiiragi Kouichi-kun. I'll be waiting for you after school behind the school gym. Sakuragi Umeko." These were the words written in the first love letter Hiiragi ever received. But when he meets Sakuragi, she tells him that she wants to take him to the planet R'lyeh!?! Disappointed that the love letter from the cute girl came from a nutcase, Hiiragi returns home, only to find that Sakuragai won't give up so easily. Not only that, she may have been telling the truth afterall! But then again, Hiiragi isn't such a normal guy, either...

The story is set in the Edo period of feudal Japan. It revolves around Yamada Asaemon, nicknamed Kubikiri Asa (literally "Neck-chopper Asa", often transliterated as "Decapitator Asaemon"), a ronin who is responsible for testing new swords for the shogun. The character is based on a real-life line of sword-testers who served the Tokugawa Shogunate up to the early 19th century. -- Wikipedia

Enter Hikawa Naomi, son of a music critic and Ebisawa Mafuyu, a young prodigy pianist who suddenly dissapeared from the music world.

From SCX-Scans: Though it was a bit strange, three people ended up meeting. One, who looks younger than her age and able to see the supernatural. Another who is possessed by a "Yamanko" which refers to "Yama no ko", or a mountain child. She was possessed due to her bloodline and due to the possession, she has superhuman abilities which she can call upon. Finally, an awkward person who enjoys writing poems. Coincidentally, the three are also classmates.

Tachibana Tsukumo, a girl who cannot feel pain. Yao, an immortal boy whose only wish is to die. What will happen when these two meet...?

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36-year-old Yasano Mamoru woke up one morning and realized that he has lost his memory. Not only that, he learns that he has a 16-year-old wife who still goes to high school. Mamoru can’t believe that Hana is really his wife or that he is a famous erotic manga author. His representative at the manga publisher, the beautiful Shirabe Hoko, even comes to try to help him regain his memory but nothing helps. However, as Mamoru gets closer to Hana, he slowly starts getting bits and pieces of his past back. Little does he know, something may have happened between Hoko and him the night before he lost his memory that could affect his marriage with Hana...

There’s this school where all the students are criminals. It’s a secret institution where they teach unlawful kids who’ve committed serious crimes. Yuuki Oku was mysteriously taken there and as punishment for his crimes, his memories have been taken away. Along with six other boys who have also had a part of their body taken away from them. However, they have a chance to get back what was theirs and graduate from that school if they find the puppet student who took their body parts.

Without doing much research on the school or surrounding areas, Hibino Ryouichiro picks an art school in Hokkaido. Tricked by the school advertisements, he goes to the campus only to find out it is a desolate and cold campus. The only glimmer of happiness for Ryouichiro are the girls on campus. Just hours after meeting Kisaragi Riho, the cute girl on campus, she seduces him only to find himself outside naked after she is done with him. Feeling heartbroken and used, he finds comfort in Aso Tomoe, who lives on the floor below at the dorms. Although it is freezing outside, it is hot underneath the sheets for Ryouichiro.

From Baka-Updates Manga: Yuria is a humanoid dutch wife (love doll). A female android designed with the sole purpose of being the sex slave of her master. But she has one flaw. She doesn't want to be a dutch wife. After escaping from her creator, she meets Kubo Shunsuke, who gives her a place to stay. Hilarity is bound to ensue as she battles her programming, which draws her towards him, and pretty much any other man she comes across.

Original webcomic From MangaHelpers: Ichijo Kazuya thought that he was murdered, but when he came to, he was back in his high school days. He lived his entire life as a playboy and had had countless sexual encounters with women until that fateful day that he was killed. He realizes that his murderer was his old high school friend Tanaka Masaki who was jealous of Kazuya’s relationships and his built up anger eventually exploded. Taken back 15 years into his past, it seems that he has been given a second chance at life and given a chance to make different choices. He decides that the way to prevent his eventual demise is to make sure Masaki is more successful with girls and loses his virginity before Kazuya. But fate seems to be steering Kazuya towards the path of his previous life and keeps introducing the same girls he had sexual encounters with. [vyc]

Fushimi and Toume were just a normal boy and girl going to high school until one day they stumble upon a phantasmal mountain known to legend as "Mount Hagure" . Before either of them knew it, Toume was possessed by a Yoko by then name of Dakini, a goddess that grants wishes. When asking what Fushimi's wish is, it is only this: Give Toume back. Dakini says she can grant the wish but in return he must become her servant. The deal is struck. Fushimi has now become Dakini's servant and Toume has been returned. Darkness, however, is afoot and now Fushimi must take on a more active role as Dakini's servant. Is he up for the task?!

An anthology for the Hanshin Tigers' 80th anniversary.

From Megchan's Scanlations: In a small town in Tokyo, the PTA argues about teaching sex ed in elementary school, but what nobody knows is that eleven-year-old Haruna is already pregnant. When she decides not to tell any adults, it's up to her classmates to help her through this ordeal. Note: This is not loli. Sex happens off-screen and the artwork is not fan-servicey.