A collection of oneshots:

1) The Glasses Thief
A cute story about a boy with bad eyesight and the girl who is in love with him.

2) Convenience Store Honey
A boy worries about his quiet boyfriend.

3) Adult-Uniform
A girl wonders why her childhood friend does not speak to her anymore.

4) Refrigerator Chocolate
Satoru is going to have heart surgery with a 50/50 chance of surviving. One day he comes across a girl in a refrigerator...

From Aerandria Scans:

There are some things that I can’t understand since I’m a child. So, I’m going to try my best to find someone who can show me how to become an adult.

Ever since he was a child, Maeda Taiki looked plain and shabby, and has never been popular. For these reasons, he wanted to at least have a good sense of fashion as an adult. So before he knew it, he became a shop attendant at a fashion mall. He has now found someone that he likes…. an employee at the fashion mall’s main department, Yagii Haruhisa. Not only is Yagii kind and handsome, he’s friendly with everyone he meets. He’s someone that Maeda simply can’t help but admire. However, Maeda is aware that he doesn’t stand a chance of loving someone like Yagii… That is, until an awkward question from Maeda causes Yagii to steal his first kiss?!

From JShoujo Scans:

Contains Five One-shots:

1) Yoake Mae (Before Daybreak)
Iori is the daughter of a wealthy family who has lived a caged-in existence. She has lived her life following the path set down by her parents, and now she is about to be married off to a man she doesn't love. She runs away and stumbles upon the late-night food stand run by Akira. His kindness and warmth opens her mind to a world she didn't know existed--but when his tragic past threatens to destroy the pure love that has begun to blossom, she must choose between the life she has always known and a love she didn't know was possible.

2) Back-Light
Ami, diagnosed with cancer and six months left to live, only wants to support her okama little brother. When her job requires her to look after her crush, Kyousuke, a professional boxer, she takes the plunge. But it turns out that he's the same.

3) Talking to Your Fingertips
When her grandmother strains her back, Kotoko takes the opportunity to take care of her father's step-brother who is in the hospital with a broken leg. The thing is, this uncle of hers, Sou, a children's book author, is also the only love she can't give up on.

4) Talking Eyes
Sequel of "Talking to Your Fingertips."

5) Phantom Pain
About a girl with the bad habit of plastering a smile to her face and biting her hand.

A collection of short stories.

1. The Moonlight (Reijin Jan. 2010 Issue)
One midwinter night, some female prostitutes picked up a child, Kiyohito, in the red light district. He is forced to take clients at age 14; and in two years, he has become the moneymaker of the shop. Resigned to his fate Kiyohito hides his feelings of love from his physician, the object of his affections.

2. Homo Rangers Regiment (Reijin Jan. 2011 Issue)

3. Hidden Sin (Reijin Jan. 2012 Issue)

4. Jugurino Juguno (Reijin Mar. 2014 Issue)

5. Mirage (Reijin Mar. 2013 Issue)

While wandering about, Masachika stops by to watch a traveling troupe perform. Captivated by the sight of an oni maiden dancing in a whirl of cherry blossoms, he redeems her and takes her as his traveling companion. He names her Ouka and treats her kindly. She slowly opens up to him; however, having experienced little warmth in her life, she is also unsettled by his kindness. As for her final resolve...

Other stories in this anthology:
- Mugen Dokei
- Sandglass no Ori
- Hana no Canon

From Syuura:

During a field trip to the imperial capital, Tokyo, Kaga Nanao overhears the beautiful melody of a violin and immediately becomes captivated by it. In order to meet the mystery violinist, Nanao learns the violin and defies her father's wishes by attending the Marianne Music Academy for girls in Tokyo. Upon arriving at the school, Nanao comes across her mystery violinist who turns out to be Sagami Takenomaru, the violin prodigy and adopted son of the famous violinist, Sagami Chougo-sensei. However, Takenomaru isn't just a regular person, he's determined to complete a mission and fulfill a contract...

Note: "Naki Shoujo no Tame no Pavane" means "Pavane for a Dead Girl" and is a wordplay on the Japanese translation of a solo piano piece, written by French composer Maurice Ravel in 1899, called "Pavane pour une infante défunte" - Naki Ōjo no Tame no Pavane or Pavane for a Dead Princess.

A collection of short stories.

1) Nakasete! Doctor: A paediatrician sleeps with whomever he pleases without much thought, but when he tries to corrupt a naive single father he ends up falling for him instead. (But he does end up corrupting him).

2) Welcome to Club R: A young man is recruited to work at a host club, but he's only an amazing host when he's had something to drink. To make things worst, he can't remember *anything* the morning after.

3) Close the Secret Door: A manager of a clothes store is concerned when his business appears to be in danger, but he thinks he finds his salvation in a customer who visits quite often and buys many new outfits. Except every time the customer visits, they end up having sex in the changing rooms, and the manager thinks he may be falling for him.

4) Sweet Sweet Room: A hotel worker is complimented for the first time by one of the guests he assists - a romance novel writer who hasn't experienced love of his own. The worker then becomes determined to be as helpful as possible! Except... he's really more of a klutz and hindrance than anything. But that may be okay because the guest finds himself feeling something resembling love for the first time.

5) My Best Smile Belongs to You: Saijou - the most popular boy in school, who's charming and perfect and can win over anyone with his famous smile! Everyone except Hoshi, that is, and this frustrates Saijou to no end. He's determined to make Hoshi fall for him, but he may be falling for Hoshi in the process.

6) Good Night, Sensei: Continuation of the first story.

(Description adapted from angelkurisutin's comment, below)

After the world ended in the original Devilman, Akira Fudo is in hell, seeking the soul of his beloved Miki while at the same time Doctor Hell is beseeching the underworld for power in order to get his revenge upon the hated Mazinger. Akira sets in motion a chain of events that earn the enmity of Hades himself, who'll stop at nothing to avenge the slights Akira commits against him.

After the world ended in the original Devilman, Akira Fudo is in hell, seeking the soul of his beloved Miki while at the same time Doctor Hell is beseeching the underworld for power in order to get his revenge upon the hated Mazinger. Akira sets in motion a chain of events that earn the enmity of Hades himself, who'll stop at nothing to avenge the slights Akira commits against him.

Popular playboy Kanzaki has his eye on Asahina, who practices basketball diligently. Only problem is... they're both guys! Or so he thinks...until an unexpected accident uncovers his crush's true identity as a girl. But why is Asahina cross-dressing in a co-ed school? Rivalry and romance begins in the basketball club!

From Fantagraphics:
A DECADE-SPANNING JOURNEY INTO DARKNESS
Even as butterflies ominously proliferate in town, the rumor of a mysterious creature lurking in the tunnel behind the school spreads among the children. When the body of Arié Kimura's mother is found by this tunnel's entrance, next to apparently human traces, the legend seems to be confirmed. Is the end of the world coming? In order to appease the wrath of the beast, the children decide to offer it a sacrifice: The unfortunate Arié, whom they believe to be the cause of the curse, is shoved into a well that leads to the Nijigahara tunnel — an act that in turns pushes Komatsuzaki, the budding thug who has carried a torch for Arié for a while already, entirely over the edge.
But this is only the beginning of the complex, challenging, obliquely told Nijigahara Holograph, which takes place in two separate timelines and involves the suicidal Suzuki; Higure, his stalkerish would-be girlfriend; and their teacher Miss Sakaki, whose heavily bandaged face remains a mystery; and many more — brothers, sisters, parents, co-workers, teachers, aggressors and victims who are all inextricably linked to one another and all will eventually — ten years later — have to live with what they've done or suffered through.

In the Nacchan no Romantic Love series:
V.1 - Kimi wa Ima mo Kimi o (僕は今も君を)
V.2 - Naisho de Kiss o Shiyou (内緒でキスをしよう)
V.3 - Nigeru Natsu (逃げる夏) (Summer of Escape)
A collection of short stories.
The title story focuses around Chihaya, who has a crush on Morisaki. However, the flower arranging school she inherited from her father isn't doing well, and her step-mother wants her to marry into another school to revitalize it. Chihaya disobeys her step-mother and runs away, only to be later rescued by Morisaki. Unwilling to go back home, Chihaya starts to spend the summer at Morisaki's place, painfully aware of the situation... though Morisaki doesn't even seem to notice.
- Storm in Heaven

From FairGame:
"Ever since that day, my love has been in a sleep. I'll be dreaming until I'll wake up with your kiss"
Alice is a bright high schooler who had been taking care of her father, her only family. she is beginning to grow feelings for Ryuu, who is a son of the owner of the hospital where Alice's father is at. One day her father's condition drastically changed and she became alone in the world. She decides to join a project called venus project, and their unimaginable secret was...

From Manga Abyss :

1-2. Sleepless Butterfly
The Kinase village is being called “a village protected by god”. Kaya and Rin were raised in a village that’s surrounded by a deep forest. Although they are brother and sister they aren’t related by blood. However, they get along well despite this. Although they are living together peacefully but there is a secret kept from everyone~!?

3. Kaze ni Hana ni Kimi ni
Erika meets Ryousuke, a boy from Tokyo that had a strong passion of swimming until he injured his shoulder, forcing him to abstain from swimming. Ryousuke, having loved the sea for a really long time, becomes really sad, and has lost all hope in finding another way to live. Erika wants to help him...
- Intercross

4. Monochrome World -
Ever since a certain Christmas Day when she was little, Jun has seen the world as Black and White. Even after ten years, her eyes are still like that. She doesn't want to tell anyone about her secret because she's already been "betrayed" once by a friend. After that, they were separated. Little did she know of the suprises in store for her...

5. Alice

Sanako is a 10-year-old girl who lives with her father in Tokyo. Inside the gray building which is their home, they have created a sky garden full of huge, green potted plants. In this city oasis, kindhearted people meet…

Eri Yukizaki, is a girl locked in battle with a chain-saw wielding incantation of true evil. But like the demons that boil inside her heart, the 'Chainsaw Man' doesn't seem to die no matter how much she stabs him. As she fights, a young man, Yamamoto watches, love-struck, wishing he could be more than just her useless bicycle courier.
An action-packed romance, digging into the human psyche, exploring the demons that buries us in sadness and misery.

Do you have a song that has left an impact on your heart?
Do you have a secret you can't tell anyone?
A slightly heartrending love story.

“Ever since I was a little girl, I’ve been infatuated with the “other side”; the world of splendor. Yes, I wanted to become one of those glittering stars. And so, my dream has come true. But now…All I want is to be beloved by someone.”

When she was young, Yukino Miyashita wanted, more than anything else to become an idol. After accomplishing her dream, however, the idol group she was part of failed to sell, and she returned to school, facing alienation from her peers. Now, at age 18, Yukino is living alone in Tokyo, half-heartedly trying to start a new life as a talent manager, while not quite able to put her idol days behind her. She meets Setsuko, a songwriter who also once belonged to a failed idol group. The romance sparked by her encounter with Setsuko causes Yukino to reevaluate her own life.

A story about two classmates, Sahoko and Rio. Rio is depressed and self-abusive due to lack of loving relationships with her "family" -- which consists of her negligent father, overbearing, selfish stepmother and stepbrother; and Sahoko soon becomes her only comfort in life. Sahoko on her part has a frigid relationship with her overprotective parents, and lives with her aunt by consequence.