From Aerandria Scans:
Maria lost her mother when she was ten years old, and now she’s a high school student living by herself. But suddenly, two butlers, Rufus and Yuri appeared! They work for her father, whose whereabouts is unknown, and they informed her that she’s a princess?! Moreover, she’s told that her father is on the verge of death and would like to meet her during his last moments... It’s the start of the princess training between the two butlers and Maria!

Asakura Aki is her middle school's track star. She's in love with her neighbor and childhood friend, Shiiba Chihaya. There's news that a transfer student is coming with a track scholarship. Aki doesn't even lose to boys, so they decide to square off in a 100 meter race!

Hinata Youichi and Amamiya Ginga are members of their school's Space Club. Always aiming for outer space, they have tried many experiments and have failed everytime. One night when the moon is full, a UFO crashes in Memorial Park. But this UFO seems to have a girl inside! From Baka-Updates: The story starts with two members of the Space Club launching their 21st rocket, Himawari. The club president, Amamiya Ginga, is the son of a hero who does everything with a grin and states that "Nothing's impossible for the members of the Space Club!" after jumping off the school's roof. The protagonist of this story, Hinata Youichi, is a space-lover and knowledgeable about starts, is a less outgoing than Amamiya, still follows the President around, sometimes forcefully. The story picks up when Hinata sees a shooting star, so he starts going to where it landed. Along the way, he meets up with Amamiya, stating that is wasn't a meteor, but a UFO. Based on the Visual Novel, Himawari by Blank note

A collection of short stories:

1) Hikitate Yaku no Koi
Chie's always played second. Friends with pretty Chika-chan she's only ever attracted the attention of boys seeking the role of Chika-chan's boyfriend. No one sees her for herself. But is that the case with Horikawa-kun?

2) Isshun no Tsuki
Mizuho is in love with Shugo-sempai, and even manages to kiss him secretly under the cover of darkness. Only one problem. Shugo is the boyfriend of Mizuho's older sister!

3) Koibito Kyoukaisen
Aya is still a high school student. There is no way she is going to attend an Omiai (matchmaking) meeting with some strange guy! No matter how great this Keisuke guy seems to be...

4) Doko Demo Issho
Manami is always teased by her classmates for being ugly. Only Satoru-kun defends her. In fact, he declares he loves her! But this world is so cruel... they will have to find another world to live in!

Three students are living fairly normal lives when, one day, they are overcome with intense stomach pain and a star symbol appears like a tattoo on their skin. With the symbol came supernatural powers, as well as enemies coming to kill them.

As more and more people develop similar supernatural powers, the story starts to turn into a Battle Royalesque bloody playground, only with an entire city as the setting and many innocents caught in the crossfire.

Among other themes, the story asks the question, "When is it alright to kill?" and delves deep into the darkness of the human psyche.

Lawyer Gamou Toshiki and Prosecutor Amamiya Hiroaki met in college and quickly became friends, but for the serious Gamou it was love at first sight toward the charming Amamiya. After being separated for several years, Amamiya has moved back to Tokyo and though Gamou knows there's no chance of anything other than friendship, even that has to change...

A school girl named Eri is magically summoned by a magician named Rex, intent on doing some scientific research observing people from different worlds.

Instead of being terrified about her current situation, Eri manages to secure Rex’s promise to summon her again every week. After all, being in a magical world is a lot more exciting than life as a school girl.

A Collection of Oneshots

Story 1: Hidarite no Love Letter
Nishino has been sitting next to the most popular guy in her class, Minami Taiga. Nishino loves Minami, for the main reason that Nishino has always been ignored or made-fun of by her classmates except for Minami. One day, Minami notices the messages that Nishino has been writing on her left hand, which kindles a new connection between them.

Story 2: Ferris Wheel at Sunset
Tomoko and Kuuto haven't talked to each other in years that being even that they're were best friends as children. Now that the amusement park they always visted is closing down Tomoko becomes desperate. It might be her last chance to talk to Kuuto, and the last time to remeber their memories together. What can she do to get back to the past that was so much fun?

Story 3: Natural Union
After Adou Saya misplaced her love letter to Aita-senpai she tries to tell the person that got the letter it was all a mistake. But after seeing Sabara Yoburo playing basket she becomes distracted and has no chance of telling him the mistake. She continues to try but as time goes on she becomes unsure of her own feelings, could it be that she is starting to love Sabara-san?!

Story 4: Such a Dangerous Distance
Akria has a big little brother-complex, this causes her to not see him as a 'man' but rather as the little brother. But when Touya reveals that they are not connected by blood what will Akira do? Is it possible for her to still see him as a brother or does she have to accept her own feelings that might go beyond the love for a brother?

Story 5: Nude Time
Yonei Mitsuna wanted to get a part time job, but for some reason when she came to place where she was going to work there were nude girls, and owner said for her to strip too... as a nude model. But she didn't listen and in rage broke one of his works and now forced to work as housekeeper to pay off the debt, but owner is constantly nagging about wanting her to strip.

Love Everyday:
Arata and Yamato are going out, but it seems that Yamato doesn't get like getting close to Arata at all. Arata goes crazy over not being able to figure him out!

Midnight Delivery:
The highlight of every late work night in Sakaki's life is seeing the parcel service man Nishimura drop by the company: the man who already rejected his love confession once before.

Late Night Struggle:
Miyata is woken up in the middle of the night by a call from his lover.

Hands:
Graduation is aproaching and Murakami Tokuzou has never found the courage to confess his love to his art teacher. And then there's a mysterious love letter in his shoe locker...

The Two of Them, Waiting for Spring:
Always being teases for looking like his little sister, Sougo is sick of it.One day an old childhood friend of his transfers to his school and he remembers that one uncomfortable incident that happened between them...

The Prey I Aim for Won't Escape:
Saiga attempts to seduce his infirmary teacher who believes there's nothing better than big chested AV girls.

It's HOT! (Continuation of The Prey I Aim for Won't Escape):
Saiga and his sensei deal with a way too hot summer night...

Kingou is a boy with extraordinary powers of concentration. However he doesn't put it to any practical use. He skips class in school, and is mocked by most classmates. Except for one kind girl called Shima. However even the friendly Shima can't get the loner Kingou to interact with his classmates.

An outing with a group of classmates, including one of the popular boys in class and Shima, leads to the astounding discovery that Kingou works at a Billiard hall. An incident with a Hustler leads to Kingou putting his talent of concentration to use, but everything is not as it seems...

From Pleasant Memories

Waiting 300 years for a fateful meeting, living positively with crazy delusions, striving for many lovers, and drinking milk every day to get bigger breasts…Girls do all of this for boys! A collection of four stories to help out with your love.

1) Lifeless

2) Honey * Filter

3) Triple Milky

4) Hot Milk

This is the story between Matsuda Otome (a young girl who experienced parental neglect) and Nakagawa Minato (a school teacher).

Otome has gone through a difficult past and is now under the care of Minato-sensei. With Minato's determination, Otome's finally accepted and warmed up to her new guardian. As time goes by, their relationship gradually grew into something much more.

Mana and Kenji, twin sister and brother, found a star as little children. On a far off world, their star is called the Talshas, meaning 'Stone of Wind and Gods', and it will grant the wishes of one person for as long as they live. And though it has lain quiet for 10 years, that is swiftly changing. The twins' lives are rocked by tragedies and miracles, chance meetings that are not as innocent as they seem, and trust forged and broken as a war between two distant planets descends around them. And ultimately, the only real wishes are the ones made for the sake of another.

From DTM:

Nagahisa Amachi is a master of the sword working as a hired sword in search of countries involved in a war to make a living. Besides that, he's also searching for one thing. A man !! A man with a scar on his face !! A man who stole his father's precious sword !! A man who brutally murdered his family with that very sword !!

From Stage Storm:
This manga includes two different stories.

1) Hoshi no Harmony (2 chapters) : The first one is about a girl, Yukiko, who is always doing what others tell her to do and a boy, Wada, who can't stand how his classmates always taking advantage of her naivety and kindness and tries to knock some sense into her.

2) (4 chapters) Mayuko and Sugikake's story : Mayuko had an unrequited love with her cousin and promised herself to not fall in love again but everything changes when Sugikake, her sempai in the volley club, starts picking on her.

From Manga Art:
A dog named Nonnon who loves her master very much wishes to become a girl! What will happen to her now?

No matter how much time passes, and no matter who they are, the love one has for their parents does not change. A heartbreaking tragedy about the memories a son has of his late father.

Original webcomic

From Nakama:

Saiki unexpectedly meets his senior high school rival, Satou.
When Satou confesses, "I've always liked you," Saiki's brain panics!
Even so, Saiki has feelings he cannot express in words for Satou, who sweetly and forcefully pursues him. Then one day, kissed by Satou, Saiki's body responds ... !?

From Storm in Heaven:
There's a legend about a certain library at the Doumeikan University: whoever meets there for the first time will fall in love. One fateful day, Shino waits for her date there, but she doesn't meet him. Instead she meets a football player who took refuge there, trying to avoid his angry teammates. Then the two surprisingly find out that their parents are getting married, and so they start to live together...