COGA, Mayumi

A collection of 11 oneshots from Coga Mayumi, including Hibi Kira Kira: 

It’s summer holidays for Tomoaki and he is helping out at the daily morning exercise for kids. But recently, he notices that a young man living beside the park has been looking at the exercise group every morning. Is the young man a Lolicon that is targeting his kids, or is it entirely something else? 

(Source: Echochi)

Blind of Mind

ブラインド オブ マインド

Maya, Mineo

Once, there was an island where it was always spring...

...An island somewhere in the South Seas, with green forests and wide lakes. And mountains, let us not forget the mountains. Tall mountains with deep roots, filled with one of mankind's most precious treasures: diamonds. The name of this island is Malynera, and its king is only a child.

Patalliro the 8th, King of Malynera, is ten-years-old. From the day he was born, everyone knew he was... unusual. He is a hyper boy, with flashes of genius, moments of thoughtless cruelty, and the ability to make a bad pun out of anything. Smart, but only a child and so he often does very stupid things.

Patalliro! is his story.

He lives in a world very similar to our own, but where the bizarre is commonplace. He manages to get into all kinds of trouble, from international terrorists, to space aliens, to accidental time-travel. His first challenge as king is to stay alive, when a group called the International Diamond Syndicate decides that they want control of the Malynera diamond mines. This is how he meets Bancoran, who was assigned to be his bodyguard during a trip to Britain. It's also how they meet Maraich, who was one of the assassins sent by the IDS.

Patalliro is almost always accompanied by his army of Tamanegi ("Onions," so-called because of their onion-shapped wigs). The Tamanegi all wear identical masks, wigs, and glasses, and are known only by numbers. They are Patalliro's protectors, but protect the world from him just as much as they protect him from the world.

(Source: cathion.net)

Patalliro!

パタリロ!

Hamada, Shoko

Kuwabara, Mizuna

Toujou, Kazumi

Mirage of Blaze is equal parts melodrama, historical romance, and supernatural fantasy. Japanese history predominates a heavily structured plot, which mainly involves the continued aggression between magic using guardians, or "possessors," and the denizens of a "feudal underworld," or the restless souls of long-dead samurai attempting to re-ignite ancient war on the modern plane.

Honoo no Mirage

炎の蜃気楼〈ミラージュ〉

Motoni, Modoru

A story about two men that have been best friends for years, knowing the fact that they have feelings for each other, and ignoring it. They discovered it on their college days and settled the matter with a time limit; if they hold the same desire years later they will do something about it. Now both of them have girlfriends, but it seems that their desires only grew stronger, in spite of loving their women. So, what happens when their girlfriends agree to make them indulge in their desires?, and have a relationship only between the limits that desire allows them...

This is a bet, to know what is stronger, love or desire?

(Source: Queen2408)

Koi ga Bokura wo Yurusu Hani

恋が僕らを許す範囲

Takaguchi, Satosumi

High school delinquent Mura must put up with the annoying presence of new stepbrother Subaru when his mother goes away on honeymoon. Dealing with gossip at school is bad enough, but Mura's life is turned upside down by a forbidden locker-room kiss and the publication of an incriminating photo snapped by shounen-ai fangirls.

Takaguchi Satosumi's first BL work.

Lucky-kun

Fortunate Boy

幸運男子(ラッキーくん)

Takagi, Ryo

A spin-off oneshot of Ousama Game, involving, yet another Prince (5th) ... and, of course, a Pirate... 
(Source: DokiDoki)

Kaizoku Game

Ozaki, Minami

Jaded rock star Kouji Nanjou rediscovers passion when he meets Izumi Takuto, a young soccer prodigy. Kouji's obsession with Izumi leads them both into a world of pain and abuse, wherein dreams and lives alike are shattered.

(Source: ANN)

Zetsuai 1989

絶愛-1989-

Sugimoto, Ami

The third series in the "Animal X" timeline.

Having burned enough bridges in Japan, Yuuji and Minato have moved their new family to a small dinosaur-crazy town in Canada. If there's any place in the world left for Dinosauroids, surely it must be here: a town revived by the discovery of dinosaur bones, with one of the largest paleontology research centers in the world, and a network of "Conservation Centers" set up to cater to the newly-discovered Dinosauroid community. The rest of the world, None-the-wiser for the incident at the Biodome (which was covered up completely) has pretty much forgotten all about Dinosauroids.

Animal X: Genshi Sairai

Animal X―原始再来

Yamada, Yugi

Junior high student Izumiya is surprised by a sudden kiss from his handsome classmate Hayakawa. Leaving him completely confused, Hayakawa suddenly leaves town, but the two reunite again in high school. As the two continue to part and reunite, Izumiya's feelings start to stir...
 
(Source: MU)

Doushite Namida ga Derunokana

どうして涙が出るのかな

Takazawa, Taeko

Chapter One:
Takaya, a high school student, has a relationship with his teacher, Hikaru. As far as Takaya knows, they're still going strong. But then he sees Hikaru with a woman ... ?!

Chapter Two:
This second chapter is about Hikaru's younger brother, Sora. He leaves home after a fight with his father, and wanders the street. He's so hungry after a while, he collides with Keiichi, who takes him home ...

Chapter Three:

Chapter Four:

Love Masshigura!

ラブまっしぐら！

Compilation of 7 short stories:

1) Love Affair in the Afternoon
College student takes over a tutoring job for the friend he has a crush on.

2) I don't mind it if You are a Man
College students/neighbors are (only?) sex friends.

3) Love's Worries
Ex-lovers from their student days are reunited.

4) Kana and Patience
Divorced man cheats on his new lover.

5) Why there is no Ice Beer
Younger co-worker always hangs out at his sempai's house.

6) Bring Me to the Edge of the World
An odd 17-year-old electrician puts in an air conditioner for sexy businessman.

7) Spinning World
Sequel to Bring Me to the Edge of the World. 

(Source: MangaUpdates)

Yarashii Hirusagari

やらしい昼下がり

Fujikawa, Touko

Shinobu grew up in a town so small that he didn't even have any classmates in elementary school. Without any friends his age, he spent his time learning about flowers with a local horticulture expert. Now that he's moved away to a city, he still sticks to himself, since he never really learned how to make friends. That is, with the exception of Yukihito, who came up to him one day and became his friend. The trouble is, now Yukihito means the world to Shinobu, and he doesn't know what to do about it. (Source: Storm in Heaven)

12 Manga Like Gravitation EX