From Summer Rain:

Momoko is a girl who likes learning about the trivia of life, and begins wondering about Haishima-kun who sits next to her in class and always dozes off. One day, they have a small exchange as they were asked to mark each other's quizzes, and she learns that Haishima isn't as scary as expected...?

Note: Because Shinjo Mayu stopped her job relationship with Shogakukan, she continued her incomplete manga in Asuka and called it Ai Ore! - Danshikou no Hime to Joshikou no Ouji This can be considered a continuation of Ai (w)o Utau Yori Ore ni Oborero! or even as a second series.

A series of oneshots

1) Ookami Shounen
Chisato loves strong, dangerous and cool guys. That's why Ikehara, who hates dogs and confesses to her, is no good! But then, Ikehara tells Chisato his secret??!

2) White White
It?s Christmas Eve and Saori goes through a blizzard to give homework to her crush Masa-kun. When Masa-kun's girlfriend cancels Saori gets to spend the day with him.

3) Together With You
Misa is dating her childhood friend but when things don't go her way do they split up for good?

4) Pig

5) Spider's Thread

6) START

From Yen Press:
At the invitation of an old school friend, introverted high-school student Mikado Ryuugamine, yearning for a life less ordinary, makes his way to Tokyo. His destination: Ikebukuro, a hotbed of madmen living most unusual lives. On his first day there, Mikado encounters a cast of characters so colorful, the rich hues of his rural hometown pale in comparison! And as if the naive stalker chick, the high school senior obsessed with the rather creepy object of his affections, the hikikomori genius doctor, the hedonistic information dealer, the strongest man in all of Ikebukuro weren’t enough…Mikado also chances upon a sight that leaves him rubbing his eyes and scratching his head — the Black Biker, who is black as night from bodysuit to license plate, soundlessly weaving through the streets like a figure out of an urban legend. Who is this “Headless Rider” on the jet-black metal steed!? And why does it seem like Mikado’s already gotten himself neck-deep in the insanity that is the norm in his new home!?

1st Arc: Durarara!! (4 Volumes)
2nd Arc: Saika Arc (3 Volumes)
3rd Arc: Yellow Flag Orchestra (3 Volumes)
4th Arc: Akane Arc (still ongoing)

This is a story about two friends, from nearly the beginning to almost the end of their lives, who happen to love each other.

Tatsuya and Junichi are in 5th grade and their music teacher is a pedophile. One day the music teacher has a request for Yumi, a girl who uses him to get expensive gifts. He wants her to get Tatsuya into the music room so he can be with him. Junichi recently confessed his feelings for Yumi and she decides to use him as bait to get Tatsuya to go to the music room. Junichi and Tatsuya's future does not look good...

Note: Only chapter 1 of volume 1 and chapter 7 of volume 2 is shotacon. Reading chapter 1 is almost necessary for the story and is not very explicit, but chapter 7 of volume 2 is an extra/one-shot and can be skipped over completely for those who dislike shota.

A one-shot webcomic with the existence of Santa as its theme.

From Fantasyshrine: Ever since he had sex with his childhood friend, Shinonome, the uptight Student Body VP, Yukimura, felt he was caught in a whirlwind. He found himself invaded by Shinonome in his own bedroom, in the library,everywhere…! Out of desperation, he found his only defense was to treat Shinonome coldly so he could keep his sanity intact. However, it only pushed Shinonome to go to the extreme…!! Will the head-strong, stubborn VP finally come to terms with his feelings…!? Sequel of Kirai ja nai kedo Part of Waruiko series: - I WANT TO BE NAUGHTY! / Warui Koto Shitai / - WARUI KOTO BAKKASHITE GOMENNASAI - KIRAI JA NAI KEDO - KOI JA NAI KEDO - MUJIHI NA OTOKO

In the 30th century A.D., in a world in which magic exists, 100 years have passed since the human race won a war against the Devil King. Even though the war caused many sacrifices, slowly but surely civilizations began to rise again.
One day, a virtuous child named Sai Akuto ("Worst Evil") is adopted from the orphanage he's lived in ever since a witch quietly left him at the church as a baby.
Five years later, Akuto passes the test to enter Constantin Magic High School. But after arriving and taking the vocational aptitude test, Akuto receives surprising results:
Examination Numbers: Number 021
Name: Sai Akuto
Future Occupation: The Devil King

Katsuragi Anna is a former ballerina who tries to find herself when her dreams of ballet stardom fall flat. She is tricked into joining the archery club by her friend... only to find that the president is her childhood rival, Jinnai!?

He's giving headaches to the serious student council president. But they are strangely in tune with each other...!?

(Also included in the Sweets Fortune Telling Anthology as Boy of Pudding story)

In this screwball romantic comedy, Haruhi, a poor girl at a rich kids' school, is forced to repay an $80,000 debt by working for the school's swankiest, all-male club--as a boy! There, she discovers just how wealthy the six members are and how different the rich are from everybody else...

Includes 4 chapters of the story "Romantic Egoist" in various volumes, starring a pair of twins who play matchmaker with their fellow students, teachers and the like.

School girl is trained by a secret branch of the police to detect and to kill demons disguising themselves as humans.

The heartbreaking story of Mirai, a pushover type of guy, who is easly engaging in relationships with anyone who confessed to him to fall into dependency. Told from the POV of his childhood friend Hibira, who cares deeply for him.

From MangaHelpers:
Haizawa is the cool kid in school. He's naturally good looking and has quick thinking. It all starts when he accidentally finds a spot on campus that lets you see up girls' skirts. First, he has a sexual encounter with the school´s most popular girl, Kuroha Ageha, after learning that her big crush is him. Next, even the young and beautiful science teacher, Ms. Shiromine, falls victim to Haizawa´s sexual aura that's starting to grow stronger.

Manaka feels awkward being with Sasaki, as he seems to avoid her. When their hands accidentally touched, Manaka sees a completely different face of Sasaki.

What would you do if you were given the power to make your own rules in which everyone has to obey to them?

Light 'n fluffy shoujo ai

From ShoujoMagic: Iizuka Sono just transferred to a new school where the reigning oddballs have their own club called "BxB Brothers" ("B" for "Baka" = "Idiot"). According to them, you make your life meaningful by doing things out of the ordinary. ;) While Kazuhisa and Kei aren't too selective about membership, Katsumi is -- so it's just the three of them... Until Sono strikes Katsumi as an admirably unusual person, and he coerces her into becoming a Brother! The more Sono learns about the Brothership and Katsumi, the more pride she takes in being a Brother, but being the only BxB Sister has its problems. Caught between the open affection of Kazuhisa and the reserved admiration of Katsumi (with Kei taking school-wide bets on the side), all while struggling to register the club officially, it's a BxB Triangle that constantly takes on new angles!

High school student, "Otona-chan" is popular among both guys and girls with his cute looks. But instead of being treated like a child, he wants to be treated like an adult and really admires cool adults. And then comes a student teacher to his class, who is very much adult-like and he falls hard...

[By Yaoi Desire Revolution]

Young Gabriel Woods is about to discover that his dreams for an adventurous life will lead to something unimaginable. The door to the realm of the oldest race in the universe, GODS, is finally open to humans. From the mysterious dream eaters of hell to the legendary ocean realm of the sirens, the vast mysterious universe lay before him to explore, but Gabe must first prepare. Welcome all to the GRAND ACADEMY of OURANIA for GODS, where you will learn how to truly become a GOD. Is Gabe ready to face the powerful GODS of the new age, or will he regret wishing for more?