A conventional tale of "friendship becomes something more" when one friend secretly falls in love with his best friend who’s quite a womanizer. Things start to change when that friend knows that his friend likes him, and they find themselves feeling awkward with this discovery.

From eManga:
He doesn’t remember when it began, but it seems Tomosaka has been in love with Noda forever. The thing is, he can’t exactly confess his feelings because the two are best friends. And to protect the friendship, Tomosaka has to lock away his feelings deep inside him. From Keiko Kinoshita, the same person who gave us LITTLE CRYBABY and YOU AND HARUJION, comes a story that explores the boundaries between love and friendship. Lose yourself within the pages of KISS BLUE.

He Is Waiting For Him at The Cafe
Also includes a oneshot about Tomosaka's boss, who holds on to a heartbreaking love.

The track & field team Sakurai Natsumi joined is an uncommon team, who instead of training, play basketball and soccer everyday. The captain of Tokiwa Middle School's track and field team is Yoku-sempai, a second year student, who despite his small height of just 151 cm, is good at every sport he plays. Even though it was Natsumi’s brother Ryo who made Yoku the captain, she criticizes Yoku-sempai for being a bad captain. But soon she understands why her brother made that decision just by seeing Yoku's high jump. His beautiful jump makes her fall in love with him on a day where the sport’s ground was colored in orange by the setting sun, a day she will never forget.

"You, go to an island with Kiria's son."

One day, Tohru is told this by his father, who is the 5th boss of the Suki Clan. A huge war in the Yakuza world is expected in the near future, so he is given an order to hide on the island.

After that, Tohru and Mutsumi Kiria begin their secluded life together, and before they realize it...

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Vol 1 includes the story Double Play:
A guy who prefers net-life instead of reality... Is it even possible for someone like him to fall in love?

On the way to work, a man and a woman pass each other every day. Through the thick glass wall, they keep exchanging glances. But can they ever do more for each other than brightening each other's day through smiles?

From Osuwari Team:

Beginning of college; checking out the school clubs... Nagi likes the drama club because it has a cool-looking guy whom Nagi thinks is kind. But once she joins the club he makes the club members do embarrassing things in public--and makes Nagi cry. His name is Rin, known as "Sad Yama." He won't let Nagi quit the club--and he won't let go of her either!
*Includes a side story called Danchi Rangers in volume 2.

From Intercross:
The weak-willed college freshman Okouchi Nagi and the super sadist Sadayama Rin... Watch as these two enjoy their fun and interesting college life in the drama club!

Rules/Hydra original dj. Involves Ryuu & Sakai ; follows where Kiss left off.

Miharu, a recently enrolled student at the Seven Saints Girls Academy, is kissed on the cheek in greeting by her friend Sara. Little did she know that Sara's cousin Itsuki saw the kiss and develops plans for poor little Miharu...

1) Imaginary Lovers
A man reunites with his college love after three years only to find out that his thoroughly male love interest has apparently conceived, given birth to and raised a son in the three years since they parted. That this is anatomically possible doesn't even occur to our slightly dopey seme, who's just overjoyed at the prospect of getting back "the one that got away" plus a rather adorable half-sized extra.

2) Brothers
Two very different boys learn to co-exist when they suddenly find themselves living together and expected to act like brothers.

3) Supreme Logic Study
Two college students bask in domestic bliss after ten years of friendship, totally unaware of their true feelings for each other.

4) Twin
When Wataru dies in a traffic accident, he thinks he has no lingering attachments to the living world... if that's so, then why can't he pass on to his next incarnation? And what's keeping the sad-eyed boy who shares his lonely rooftop?

5) Bet
A bet turns into something much more infuriating...

6) D.H
A boy is enlisted to write love letters for his less-than-literate best friend... unfortunately, the object of his friend's affection is his own secret crush.

A promising young doctor, Kirihito Osanai visits a remote Japanese mountain village to investigate the source of the latest medical mystery. While he ends up traveling the world to discover what it takes to be cured of such a disease, a conspiracy back home attempts to explain away his absence. Hinging upon his fate are those of his loved ones: an unstable childhood friend and colleague trapped between factions of the medical establishment that nurtured him; a fiancee emotionally transformed by Kirihito’s mysterious disappearance; and a stranger who becomes his guardian angel, a sensual circus-act performer with volatile psychological secrets.

Koga is enchanted by Aki, a mysterious and handsome coworker who is always helping her out at her part time job. But what she doesn't know is, Aki has a secret... He can't drink anything but tears?!

Matthias, a child abused continuously by his mother, having committed her murder finds refuge in a church where he meets a seemingly helpful, young priest and Hans, a fellow resident. Not much time passes, however, until Matthias realizes that there's something suspicious going on behind the facade of a peaceful shelter... [summary taken from Aarinfantasy's website]

Meet Min Woo. A normal 18 year-old high school boy. Well... normal except for being a total otaku. He does what every good little otaku boy does. He collects figurines and toys, wins prizes at cosplay contests and is a two-time champion of the fighting game "Metal Heart". Unfortunately for him, his social life is dominated by girls telling him to get lost, since his otaku-ness might be contagious.
But after an accident while he is invited to participate in the playtesting of "Metal Heart 2", the main character to the game, Min Sia, materializes in front of his eyes at a cosplay festival. And now, Min Woo has to win Sia's heart in a real-life dating sim game with the fate of the world in the balance. Ok, so maybe not the world, but at least the fate of the company behind "Metal Heart 2" hanging in the balance.
And who is this girl, Nuri, who appears to be following Sia and claims to be Min Woo's childhood friend...?

From Fateful Encounters:

In order to protect the world from the virus “Torikago” that has infected humanity, having fulfilled the condition of living as a normal human being, the young girl, Kiri, conceals the “World’s Memory” within her body. The world loved by the Torikago. The world that continues to reject the Torikago. Over the course of time, while the world erodes the memories of the girl who does not possess a free heart, she proceeds to fall in love…

Mone's motives for joining the art club might not be pure but her heart is.

From Deux:

The Konoe and Kazuki families have been fighting like cats and dogs for generations. Masaya Konoe and Yuma Kazuki attend the same elite high school and are known to all as arch rivals, but do they really hate each other? Masaya still cherishes a childhood memory of a time when Yuma shared a "treasure" with him. Now they share a secret attraction. Can they hide their passion? Burning desire has a way of erupting into flames!

The Deux published version of this manga does not include the short story called, "Water Lily". It's about two brothers where the younger brother is in a coma and the other takes care of him. The older brother molests his sleeping brother not realizing that his touches are being noticed.

From DGT: When Asano Arisu was little she was badly bullied by the local boys, now a high school student she's famous for her vehement hatred of men and boards an all girls school. When stunning Fujimi Kira enters and becomes her dorm-mate, proclaiming that she also hates men, Arisu thinks that it must be a fated meeting. However, they both have secrets that they need to keep from the Dorm Head, strict Kamitani-Sensei: Arisu keeping a pet ferret in the dorm, and Kira the fact that she's actually a BOY--much to Arisu's horror. It appears that he's at the school to uncover the mystery of his older half-sister's supposed suicide 2 years before. Will Arisu be able to cope with having to share a room with a boy, let alone help him with his investigations? And just how dangerous will it be to solve the mystery?

A collection of stories:

3. Shizu Bato (Scissor Battle / Scissors Heart)
Takahashi Yoh, who is bad with getting his hair cut, visits a salon and is charmed by the charismatic and gentle stylist Kuno Masaya. Will love blossom?

4. Meeting Tracks

5. Brilliant Tone

Kinren is a son of a famous prostitute, when his mother becomes sick, he sees no other way to survive than to become a sex toy of a rich Chinese noblemen, despite the protests from Bu Shou, who loves him. Years pass; Bu Shou has not forgotten about Kinren…

From Midnight Scans:

An overly touching love story of a miracle...

"One's "thought" is subject to change. A change in a human can change the world. Since we're not alone, we have to be brave."

Toda Erika’s shining star is rising... It’s a miracle of love.

Sakura is willing to do anything like wishing on a star because she wishes to grant her beloved Hirose's dream. This small deed is what attracts Sakura and Hirose to each other. For them, there's always a light in the darkness.

Mr. Mitsuya’s personal remake "Koi Goku Hoshi" has been turned into a movie. This is the original script from the movie "Kimi ni Hikari wo" which is compiled to be read.

And two other oneshots