From Evil Flowers: Although this was released after the 12 volumes of Masca, it is a prequel to the main story. It shows how Caien became a demon lord, about his relationship with Rakin, The King of Speira, and the love triangle between the 2 with the beautiful Rea of the mascan race. Asarella also apears, but the story seems to be concentrating more on Rakin and Rea.

Each year, the villagers of a certain mountain village hold a festival to celebrate the harvest. Tominaga Yuuki, a 17-year-old born outside the village, is chosen to play the role of purifier in the Oni exorcism, the festival's most important ritual, opposite 3-year veteran of the dance Kurashina Hana, his female classmate. In the days leading up to the festival, Yuuki gets more and more fru strated with his role, until he starts to see...?

From Lililicious: A sci-fi story set in a future where men have died off. Women have been divided into two groups: Adams and Eves. Each has a set role in society. The protagonist, an Adam, has just entered Kingdom Academy. Romantic relationships between Adams are forbidden there, so I'm sure you can all guess where this is going...

Ryosuke returns back to his birthplace to help run his family's vineyard after his father gets hospitalized. He has sour memories of his hometown after being shut down by the girl next door, who he admired from day one. That's the whole reason why he's never returned after moving to Tokyo, to attend College, 3 years ago. Despite his reluctant return, Ryosuke happens to be quite popular with the ladies. His sexual endeavors start off with a fling with a former high school classmate, a charming girl working at his parent's vineyard, and a sexy nurse. He even manages to allure the girl next door who he has been dreaming of his whole life but...

From Garo 1982-07.

Hojo wins three wishes from a ticket and makes some choices that affect his senpai in odd ways...

A short prequel to Shounan Jun'ai Gumi and pre-prequel to GTO about how Onizuka Eikichi and Danma Ryuuji meet. Pantyshots and gratuitous asskicking galore. This manga was added as an add-in to Shounan Jun'ai Gumi and later rereleased separately. Some time later GTO came out and the two prequels became more famous.

From Ochibichan: Miya, Amatsu and Zen have been close friends ever since their childhood. One day, Miya falls in love with a cool high school student, Toujou-kun, so she decides to become his girlfriend. However, Amatsu secretly likes Miya. So, he uses all kinds of ways to interfere with her! Moreover, the three of them have a very huge secret!!

From Intercross: Makoto Hourai is given to Alice Kamiya as an "offering" because of a long-established contract between the two families. He is there in order to assist Alice, who is actually a vampire. As an offering, Makoto is supposed to give Alice his blood, however, he is anemic. How does Alice manage to drink blood, if Makoto can't provide for her? How does Makoto feel about all this?

From An Endless Story: For normal people, about one unfortunate event occurs in a 1 day period. But for some reason, it's different for Rinko. Unfortunate things seem to pile up one after another. All Rinko wishes for is to find some happiness in her life. With the upcoming New Year's celebration and a date w/ her best friend, Tatsuyuki, will her hopes and dreams be fulfilled?

Vampires exist. It is the duty of Hellsing, an organization sponsored by the British government, to hide that frightening fact and protect the blissfully unaware populace. Along with its own personal army, Hellsing also has a few secret weapons. Alucard, an incredibly powerful vampire, has been controlled by Hellsing for years. Although he dislikes being a servant to the Hellsing family, he certainly enjoys his job as Hellsing’s vampire exterminator. Seras is a fledgling vampire and a former police woman. Although reluctant to embrace her new self, she is still a valuable member of the organization. Integra Hellsing, the current leader, is usually fully capable of fulfilling her duty, but lately, vampire activity has been on the rise. Unfortunately, the cause is more alarming than anything she could have imagined. A group long thought dead has been plotting in secret since their apparent destruction over 50 years ago. Plotting to plunge England, and perhaps the entire world, into war.

A new teacher finds himself a newly appointed position as a teacher at an all girls school... on an island... in the sky! How will he make do in his new surroundings? Or the residents of this island who seem like they came from another world? And what's more, how will he fare at being a teacher?

After dating a player who had another girlfriend, Rina decides to become a player also and immediately finds someone willing to be her lifelong toy.

Iori and Nachi are the "perfect pair" of the bodyguard agency Shelter. Partners since childhood, they bicker constantly, but when the latest mission threatens to separate them, is that really okay...?

An innocent young man, Ikuroo, has a parasite known as Baoh implanted in his brain by an evil organization, Doress. The parasite makes him nearly immortal and gives him the ability to transform into a really powerful beastie when he's in trouble. Doress intends to use him in some sort of ploy for world domination. But while they're moving him around, a young psychic girl, Sumire (who's also being held by the organization), sets him free, and the two escape together. Of course, Dr. Kasuminome is the mad scientist behind the whole thing, and he isn't about to let his test subject get away... and he has everything from superpowered lackeys to a small army at his disposal.

High schoolers Rin and Kyo are childhood friends from kindergarten. They're so close that there's virtually nothing they don't know about each other. Rin, who had been pining for Takahashi-kun, his father's lover, for many years, finally gave up and wished for his father and Takahashi's happiness. After his broken heart was comforted by Kyo, Rin was finally able to stand up again, but then suddenly, he was confessed to by Kyo...?!

From batoto.net Fujii Kana just broke up with her boyfriend, when her older sister Mizuho calls her to ask for her hospitality for her and... her girlfriend. How will Kana, who hadn't ever imagined her sister to be a lesbian, cope with this cohabitation?

From Chibi Manga: Please, teach me about things we can't do ! #1. Ijiwaru na oni Kyoushi...a pretentious and cruel teacher give her private lessons after school?! #2. Geki Kawa Kyoushi…a morose girl with glasses and a handsome teacher = don't tell me it'll have some alchemy between those two?! #3. Kiken na Hokeni …A kind and gentleman teacher is in fact not what he seems to be...!! #4. Onna Kyoushi no Ikenai Koi…Though she's dreaming about an adult and handsome man, she'll become close to a high school boy...?!

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Collection of 6 short stories including: • Biroudo no Tensoku - Yuuki's boyfriend Eiichi hits him, leeches off of him, and even whores him out to some of the worst people. But Yuuki still says that he loves Eiichi and refuses to leave him

Ever since he was young, Miharu has suffered from phantom pains. When his divorced parents decide to reunite after 15 years of separation, he discovers the exact reason why: his younger brother, Natsu. Apparently, he and his brother are astrological twins. Miharu feels Natsu's pain, but... Natsu doesn't feel Miharu's? That's just not fair!

In "A Special Person" a girl envies her too-perfect friend, but loves her despite that. (from Lililicious)

Clarissa is on a mission. The Kingdom of Marik needs a prince, and it's Clarissa's job to see that Jack Brown takes on his rightful position--even if he doesn't want to. Is it just Marik and the king that need Jack, or will Clarissa get her prince, too?

The prequel to Kyoushitsu no Hajime which describes the beginning of the characters' twisted teacher-student relationship.