From Terrad:
Sae and her friends from school make the "Magic-Users Club", where they try to learn magic (usually ending in some horrible/funny mess-up).

From Blissful Sin:

Haruka is good-looking and popular, but quite the devil. Tokiwa is a quiet and shy loner. After their chance encounter in Katekyo!, the unlikely pair have begun dating. Though he was aware of Tokiwa’s reticence, Haruka is beginning to feel frustrated with the pace of their relationship. What will happen to the pair when Haruka begins to question his senpai’s feelings?

In a world where humans co-exist with Juujin (literally: "beastmen"), genetically mutated animals that have remarkably human-like features with the exceptions of extremities such as tails and ears, Juujin are often found as laborers in the work force or raised in households as pets. That is until a new kind of Juujin appears-- Evolutions, EVOs for short. These Juujin have special magic-like powers that they are using against the human race.
Peke, one such EVO, has been raised with her master Yamato Yamamoto. Yamato's mother works for the Health Care Center-- the only agency with jurisdiction over the Juujin, and has developed a special collar that can seal the EVOs' powers. Having used this collar to control Peke's own powers from going berserk, Peke must now release this power to fight and capture the rampaging EVOs to save humanity and to win her master's love.

A very cute one shot about a useless guy who is hopelessly in love with his friend... so he attempts to change himself.

From DMP:
Kojima seeks to befriend the class outcast, and soon learns of Nakahara's troubled family life - of his uncaring, abusive father and mentally unstable mother. As Kojima yearns to somehow comfort Nakahara, he gradually becomes aware that his feelings for the other boy arise from more than mere sympathy. When Nakahara declares his own romantic feelings for Kojima, their relationship becomes one of sexual exploration as they face their first steps into adulthood together.

From: Alice Dreams
This is a collection of five shoujo oneshots by Shirasawa Marimo.

A collection of stories:

1-3. The Heart of Miscalculation
"Why don't you date me?" And that's how Miki started going out with Udou, from next door's classroom, who was fighting with his ex-girlfriend. It was because of a whim, just a "game". But being with Udou, he started getting comfortable? During the sex, Udou took control of him with tricks, making him tremble in pleasure. Tender caresses, sweet passion? What happened to my body? Damn, I'm not like this. A traditional boyfriend, and a boy who likes to flirt. A story of pure and immoral love between high school students.

4. Last Summer Blues
A bittersweet story about two boys who love baseball.

5. A Vulnerable Afternoon
What happend if Oomura breaks his glasses? Maybe finally he will be able to see good side of Tamachi, his workmate?

extra The World Revolves Around You
- bonus - related to: Sekai wa Kimi de Mawatteru

From Ochibichan:

Perky Yaaya is a first year student at Koushinmaru High School and a new member of the school newspaper staff. In order to become a full member of the staff she must uncover the identities of the Sannin Kichisa, a mysterious trio of masked avengers haunting the school!

The year is 2035 and schools have been suffering from a lack of child birth which has caused many of them to close. An energetic girl named Manami Amamiya transfers to a new school where she quickly becomes the student council president and starts to bring back some vigor in the students’ lives.

From DMP:
In a European school dorm, Georges Saphir is admired and loved by everyone. However, afraid of others doing him harm, he has never allowed anyone to get close. Why is it then that misfit Robert can effortlessly step over this line Georges has drawn, and see right through him? And will getting too close to Robert result in a tragedy that justifies his worst fears?

Part of a collection of oneshots called 'Mijuku na Kareshi'. Oono will do anything to get Nagumo by his side. According to MyAnimeList, this is part of a collection of one shots. The order goes like this: 1) Aimai na Kankei 2) Yasashiku Toraete; sequel to (1) 3) Itsuwari no Daishou (False Compensation) 4) Man On! 5) Kodomo Ijou Otona Miman 6) Sweet Restraint; (Amai Kousoku) 7) Miracles Don't Happen (Kiseki wa Okorenai) 8) Mijuku na Kareshi; extra to (7); (Childish Feelings; Immature Feelings)

From DMP:
Hikaru, a second year high school student, is obsessed with Shima, a male teacher. Surprisingly, Shima is not averse to the boy's affections. He even convinces Hikaru to study hard so that when he graduates, they would openly become lovers. However, Amamiya, an ex-lover of Shima, steps into the picture and tries to win him back.
Will Hikaru and Shima's passion prove great enough to hurdle all the obstacles stacked against them?

Features the same characters and locations as Mahou Sensei Negima!, however, this series has a different story than the original. The new storyline explains the addition of punctuation to the title.

Mazinger Angels Z is a sequel manga to Mazinger Angels. The series takes place a few years after the defeat of Dr. Hell, with Maria attending high school at Paradise Academy and an undercover Sayaka is the nurse of the same school. A new main character is introduced, Kikunosuke Abashiri. Also introduced are the Vegan Empire with the manga using a plot similar to Grendizer.

From Shoujo Manga Maniac:
That man will take away both your heart and your body, together with the jewels... Kaitou Crow is a beautiful, unidentifiable young man who's only after jewels. Ruri, the daughter of a jewel designer, accidentally saw the kaitou while he was going for a preliminary inspection. While snatching away Ruri's first kiss to seal her mouth, Crow announced that this time, he would steal both her heart and her body, together with the jewel ... ? The dangerous love mystery of a conceited, forceful, beautiful, young, and perverted kaitou!

Since the characters of this volume are the same of the other 3 volumes, you can consider this as the 1st volume of the series!

Includes extra oneshots, Kuchizuke wa Amai Bara wa Kizuato and An Easy Mystery Better Than A Kiss.

Collection of short stories:

• Midnight Express

• Monday is a Secret Romance

• Daydream

• Class 2-G's Romeo and Juliet!
In a certain high school’s class 2-G, there exist two factions: male and female. However, despite this, one young couple has fallen in love… But Asako and Ryou will have to overcome the wall dividing the two groups if they ever wish to be together.
- Which Scanlations

From Liquid Passion:

After getting into the super-elite private school, our uke has to be the Student Council President's 'servant'. When the President's rival is also interested, trouble is on the horizon.

From Chibi Manga:
Witnessing the sleeping Tian Tian being kissed by Yi Jie, Dong Hae realized his feelings for Tian Tian. This sudden moment of the kiss instantly caused an uproar between the relationships of the three of them.

A collection of stories:

• Otonari no Senpai
• Fuwafuwa no Kimochi
• Hajimari no Kotoba (also in Kirakira no Natsu)
• Hon no Tomodachi
• Mainichi no Tomodachi
• Christmas no Yoru (The Night Before Christmas)