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

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

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)

Natsu, Kimi ga Saku

夏、君が咲く。

The first series in the "Animal X" timeline.

27-year-old Ayukawa Yuuji has never been much of a man; he's more comfortable sewing than fighting, he faints at the sight of blood, and his fiancee is tougher than he is. He's also a terrible pushover. So when his boss at the medical lab volunteers him for some experimental drug therapy, how can he possibly refuse? All's mediocre for Yuuji: master of the pathetic.

Mediocre, that is, until a juvenile mass murder suspect jumps out from under Yuuji's bed, declaring him his "mate." Before Yuuji has time to argue, the stranger transforms into a 16 foot-tall dinosaur and beheads his roommate...

Yuuji suddenly finds himself the sole target of a lost race that turns into dinosaurs, an extremely scary woman with a Goddess-Complex, the yakuza, a mad scientist and one 17 year-old boy who really really really wants to sleep with him.

(Source: Doki-Doki)

Animal X: Aragami no Ichizoku

Animal X―荒神の一族

Higuri, You

The sequel to Gorgeous Carat and Gorgeous Carat Galaxy.

Gorgeous Carat: La Esperanza – Kibou no Seibo

ゴージャス・カラットLa Esperanza希望の聖母

Miyoshi, Hiromi

A collection of short stories that includes the oneshots Tonari no Akutou, Loved One, and Social Reform Season.

Manga Like Sekaiichi Hatsukoi: Yokozawa Takafumi no Baai