From Boys On Boys Love:

Katou is a member of the high school swim club. Matsuoka has come to bring him lunch and use Katou as his stress relief punching bag yet again. To the sympathy of his club mates, impulsive Katou totally falls for him, saying with a shy smile that Matsuoka is cute… Even as Katou treats Matsuoka kindly and tells him that he loves him, Matsuoka remains a total tsundere, leaving doubts to linger in his heart!

From ADV:
America in the Roaring 20s. On the surface, it's a positive, peaceful time after the violence of the Great War. But lurking in the shadows is a dark element ready to snatch that peace away. Sister Rosette Christopher, an exorcist working as a part of the Magdala Order, has a duty to fight the demons which appear and cause destruction.
But along with her companion Chrno, she usually ends up causing more destruction than the demons themselves! On one particular mission, they meet a young girl with a beautiful voice named Azmaria, who is being targeted by her own stepfather. As Rosette and Chrno work to save her, more is revealed about the relationship between them. There is more to these two than meets the eye.

1. Chronic Love - Reminiscence
After the sudden loss of his father, Duke Alphonse Varney took over the affairs of his estate, which necessitated putting his mansion on the market to repay his sizeable debts. One of Alphonse’s classmates from his boarding school days, businessman Richard Turner, announced that he was interested in buying the mansion. Richard had reason to dislike Alphonse, which made Alphonse all the more unable to hide his opposition to Richard’s unexpected proposal, but in reality, there were hidden feelings between the two. This is a classical love romance collection set in polite English society. From Boys On Boys Love

2. Flirtatious Love
Francis Norman is used to seeing his employer (and rampant playboy), Lawrence Wilson, playing around with women during work; however, that does not stop the longing he feels for his boss. Lawrence tells Francis he wishes for true love, which only makes it harder for the poor assistant. Lawrence only goes for beautiful people, and the bookish Franc doesn't fit that description at all... but what about when he removes his glasses? "For feelings do not always go how we plan."

3. Midnight Secret
Ed was filled with adoration for his older brother's* friend, Oscar. Was it respect, or love? When Oscar became ill and died, Ed decided to become a doctor, fulfilling Oscar's dream. However, there is one problem: Oscar's younger brother Ryan. Ryan plays around all day and night, and Ed can't help but be bothered. When the night falls, these roommates become...
*Ed's older brother is Richard, from chapter 1

4. Cute Little Liar
After Andrew Winston stops to help a beautiful lady who looks ill, he realizes that she picked his pocket and stole his grandfather's stopwatch. He is determined to find her... not for revenge, but to help her instead since she must have had a good reason for doing that. In his search for the pretty woman, he discovers something much better - an equally beautiful boy, Ian Butler.

5. Direction of Light
Stephen, who has appeared in all the chapters so far, finally has his own story!
Time has not moved for Stephen since his lover, Oscar, dumped him and died soon after. Playing with women, dining on fine food and drinking expensive wine are how he spends his time... until his brother introduces a young artist who wants Stephen to be his model. Stephen's brother doesn't leave him much choice, so Stephen finds himself becoming quite fond of Elias Reed, and even looking forward to his visits. Stephen suddenly realized that he has fallen in love with Elias, only to hear that the beautiful artist was in an accident! Is history repeating itself?

6. Lover's Feast
An extra with all of the couples* attending a party hosted by Stephen. The ukes get some pointers from Alphonse...
*The only couple not present is Ed x Ryan... I wonder why lol. Maybe because they're in school? Pity...

From Viz:

Choko Kuze is the sensible daughter of a venerable family who went bankrupt. She joins a real estate company as an entry-level office worker, but her eccentric boss is harder on her than anyone else in the company! After hearing him inadvertently call her "milady," she realizes he was the young servant boy she knew as a child. At work he's a tyrant, but after hours he insists on treating her like a lady of the nobility. Is romance even possible for a couple locked in such a crazy role reversal?

Mizuhashi Nao is a 16 year old, who is shy and friendless. He passes his class breaks in the toilet playing games where he won't be bothered. One day an upperclassman appears peaking from above and with a huge nosebleed that covers him with blood. Her name is Serika. Wait, a girl?! What is a girl doing in the boys restroom? And why did she just ask him out on a date? Nao's world is about to be turned upside down.

As a child, Kawagoe Haruma eagerly awaited the birth of his little sister. However, his mother had a miscarriage, followed by an operation that left her barren. That Christmas, Haruma made his Christmas wish. It was a wish so innocent and heartfelt that it was accepted instantly, unbeknownst to him.

Many years later, on Christmas morning, college student Haruma is awoken by a woman riding a hovering motorcycle and claiming to be Santa Claus. She throws him a bag, and he opens it to find his new little sister!

Complaining to Santa Claus that he made this wish a long time ago, she tells him that it takes much longer for a sister than it does a toy car. After naming her Choko because of the Anchoko (mini-guidebook) she carries around, they begin their new life as brother and sister in a crazy apartment building filled with interesting neighbors.

Sakurai Sayuki was born with sharp eyes that make her look like she's always angry, even though she's not. Because of her looks, students around her misunderstand her as a bully and scary girl when in fact she's "a romantic". After 15 years without a boyfriend, she started off her high school year with hopes of love...

Also includes:
Yes or Kiss (Volume 2)
One night, Miyu was confessed and kissed by her friend, Ai's, boyfriend.

Ryouko has fallen in love with the radio DJ Choco. Upon sending him a cake for Christmas she finds herself as a substitute in the radio show. Will she be able to get closer to Choco? But then there is also her annoying school mate, Keiki...

Includes short story: Wink Rain.

Keiko is a junior 2nd year student, but has no experience in love. One day, while going to school, she helps an unconscious 'cute boy' who fainted from anemia. Being two-faced, he doesn’t thank Keiko but instead calls her an old lady. Surprising as it is, that boy goes to her school and is a first year.

Also includes 2 oneshots: Never Let Go of Your Hand and Sweet Relationship.

A terrible creature has been plaguing the community: a man with a fishbowl for a head. When he attacks someone, the goldfish leaps out of his bowl and drinks their blood. The victim is irreversibly transformed into a goldfish! This terrible crime has happened to high-schooler Kousuke's little sister. With no other option, he takes care of his goldfish-sister as best he can.

One day, he comes across a strange girl named Ringo, who wears a school swimsuit, carries an umbrella, and keeps a gun hanging around her neck. Ringo is an apprentice blood diver, and the gun is her way of shooting herself into the wounds of the fishbowl man's victims. If she can get to them in time, she can prevent them from turning into goldfish. Ringo's mentor, Ichigo, says that she's heard of a way to turn people back from goldfish into humans. Kousuke is determined to help Ringo find a way to help his sister and the loved ones of his friends at school who have met the same fishy fate! [tethysdust]

Note: The magazine this manga was serialised in was cancelled, but the series received a continuation in Comic Earth Star.

15 years ago, the newborn Ukai Nanoha and her mother were involved in a plane crash. The mother was killed and the child alone, among all of the passengers, survived. This survival was brought about thanks to the Great Demon Maou, who replaced her unbeating heart with one of his own, allowing her to live on.

Now, however, Maou has appeared once again and attempts to force her to return his heart. In the end, Nanoha goes to live in Mezon Aasu (Earth Mansion) which exists solely for the use of magical beings, and for now at least, retains possession of the Great Demon Maou's heart... but how will she be able to handle being manager of Earth Mansion, the place in which Maou himself makes his residence?

1) Chiko's Wish
Chiko is a young female sparrow in love with a human boy named Shuu. One day, the Grim Reaper suddenly shows up at Shuu's house and shocks Chiko by announcing that he's come to collect Shuu's soul. What can one little sparrow do to save a human life...?

2) Crybaby Yukimushi

3) Reverse Storm Warning

4) The Rainbow's Fugue

5) Spring Game

6) A Half-Bitter Present

1-2) Chikan Diary
Yuuto is a first year student at an exclusive private school for boys where everyone is a virgin except for the new transfer student Hachiouji. As part of the student news paper it's Yuuto's job to get all the dirty details or else spend the rest of his life as a virgin!

3) Journey of Lost Love
When his lover gets married heartbroken Atsushi decides to take a tropical vacation to relieve his stress. Nothing seems to be working until pushy tour guide Rubi decides to help Atsushi out. But the only thing Rubi seems interested in seeing is Atsushi's body!

4) The Perverted Daddy Long-Legs
Orphan Mizuki is suddenly pulled off his paper route and offered a high paying job taking care of a sick company President. Mizuki's new duties for entertaining the bed-ridden, surprisingly handsome young man aren't quite what he anticipated...

5) An Awkward Kiss
Morihira has issues moving on to the next level of intimacy with his lover Ueda because of a complex with his face, but Ueda mistakes it as Morihira not liking him. Will this pair ever move to the next level?!

6) I Won't Even Lose to Sailor Suits
Shintarou's teacher/boyfriend went to work at an all girls school and suddenly told Shintarou not to see him anymore. What is poor Shintarou to do?! Putting on a girl's uniform seems like a good start.

From Day of the River:

Since her parents are a little bit slow, Matsuda Erika (or Eri for short) has taught herself to be independent and extremely reliable. Moreover, she devotes herself to taking care of those around her—even if some of her classmates find her behaviour overbearing and annoying. One day, a strange new transfer student is introduced to her class. This boy speaks in choppy sentences, has little to no facial expressions, and goes by the name Nokina Kaname. Instantly, Eri feels compelled to take care of this martian-like new boy in her class.

This manga is a revised version of "Kimi to Hatsukoi", a one-shot found in Mako to Aki-chan no Koigokoro.

The oneshot "Kirai, Suki?" included at the end of the story has yet to be translated.

A playboy who has gone through countless girls; a pure, lovely girl whose only love is chicken cutlets; a super gifted student who spouts poetry and songs about fried chicken cutlets; a blond hyperactive boy who chases after girls with chicken cutlet deliveries three times a day; the student council president Wei Luo Li who moves people's hearts everywhere, and also the truth of the BL headline story published in the school newspaper...
The legendary stories happening at Rembrandt High School are just that unbelievable!
Includes side story to "Proud Dragon Showy Phoenix", which was published in Butterfly Likes to Read

Karin is a cute little girl who also happens to be a vampire... with a twist. Once a month, she experiences intense bleeding from her nose-we're talking gushers! In other words, she's a vamp with blood to spare, so rather than stealing blood from humans she actually gives her blood to them. If done right, this can be an extremely positive experience that benefits the "victim" as much as the vampire. The problem is that Karin never seems to do things right!

Tomoki, a young man with a thing for ecchi stuff, is used to living alone, with his dad traveling all the time. However, he is not prepared for the sudden arrival of his 9-year-old twin sisters, whom he never knew even existed! Toujou Minaho, the big-breasted girl next door, is ready to help out, but these cute little girls are quite a handful.... From Baka-Updates: Kamishiro Tomoki is an Otaku who is studying for college. One day, he received an outrageous "package" from his father: 9 year old blond girls who are his dad's illegitimate children from one of his business trips...... The twins, Selly and Riru are completely spoiled and drives Tomoki crazy. Not only that, the sisters have a "secret" plan to kick out Tomoki and claim the house just for themselves. Will Tomoki manage to make peace with the girls? Read and find out!

From Attractive Fascinante:

Kotani found his pace all messed up when the new biology teacher, Fujishima Masato, appeared. Fujishima confessed and Kotani felt scared. Fujishima’s perseverance won and Kotani accepted him. Kotani’s ex-student came back and behaved oddly towards Kotani. When Fujishima couldn’t find both of them, he thought Kotani might have been kidnapped. Was he able to save Kotani in time?

Contains one main story and two one-shots.

The heroine is a girl who has no clue about romance.

Her point of view :
My childhood friend is a cute guy, and he always come to my house in the morning to wake me up. Although he can be quite mean sometimes, being with him makes me feel very happy. But, once the fact that we're not dating became known, many girls began to hit on him, and start to confess. But, it seems that I feel something towards him lately! Whatever should I do now?

Extra 1 : The Witch's Sweetheart
Extra 2 : Victory or Defeat : The Unbeaten Love

Cherry Juice is about Otome and Minami, two step-siblings. Minami is a popular boy who takes cooking at school, and Otome is an average girl who is in love with Minami's best friend. Cherry Juice's main focus is on the love lives of Minami and Otome, who are in love with other people....or are they?