From Manga Abyss:

1-3) Ubatte Agemasu
The greatest, wholehearted, female loving wild animal story in the history of Cheese! Onizuka descends! A super sweet love story!

4) Akuma na Motokare (Devil Ex-Boyfriend)
Once a boy and a girl got separated. They knew it was something forbidden, but their lips met to be sure. "Does he love me?" The body is burnt, a passionate love.

5) Fake na Kanojo

The manga is based on THE iDOLM@STER music rhythm game, in which the player guides nine idol singers as their producer. (from Animenewsnetwork)

"They say in this world there are three people with the same face, but I never imagined one of them would be a boy in my class..."

Yuu is a healthy high school student who harbors a crush for his Kyouko sensei. He absolutely loves everything about her and after fretting about the subject for some time he decides to confess; to his surprise Kyouko Sensei is also in love with him and agrees to date him..... The catch is that Yuu doesn't know why Sensei is in love with him, neither he knows her preferences when it comes to how to behave to her partner....And by the time of when Yuu learns this we have that "Yuumi" is born, now Yuu doesn't know if he should somehow enjoy his new relationship or regret it. Same author of Amaharakun-plusThis is the sequel to sensei no Bokuhttp://www.mangaupdates.com/series.html?id=67379

In a certain town there is a slightly odd maid café named Sasanqua. The most popular maid in the shop, Botan, has just received a love confession from the new girl, Momo, and can't help but have Momo on her mind. W-w-w-w-what if this is love!? E-even though we're both girls!? Why am I having these feelings!? This is a clashing-style maid café love (?) comedy.

From Which Scanlations: It's been a month since she entered high school, and Jun has started noticing a particular guy hanging around her classroom. When he suddenly confesses, she's not sure where she even knows him from--or how she feels about him. But come what may, he seems pretty intent on sticking around...

Collection of short stories:

1) Still Got the Blues
Kuniyoshi is high-strung and ambitious. Hirayama... is not. They worked together until Hirayama suddenly quit. That's when Kuniyoshi realized how much Hirayama meant to him. But it's always Kuniyoshi pushing their relationship and he doesn't know what Hirayama really thinks.

2) The Windows Reflect a Moonlight Night
Blackmail, revenge, and unrequited love. Akihisa's uncle blackmails his father into giving him Akihisa, in return for keeping quiet about an incident in the past. Abused and in pain, Akihisa's only comfort is his gardner, Shinjo. But how can he touch such a beautiful person with his tainted self?

3) Moving Day
Senda is struggling to control his feelings for his friend Takumi. Moving in with him was so happy, but now it has become to hard for Senda to stay. Now, he's moving out... but maybe Takumi wants something... ?

4) Nobody Else but You
"Oh God. Don't smile at me like that. To you it's probably nothing, but to me it's poison." Mishima has a colleague who's nice to everyone, but even so, Mishima can't help but get his hopes up whenever Okawa smiles at him.

5) In the Room
A newly transferred employee comes home drunk after a welcome party, only to find himself being kissed by a man waiting in his room. But it turns out the man was waiting for someone else....

6) No more Goodbye
Two lovers get reunited after so many years of being apart... but perhaps one is seeking revenge? Or maybe it's just a huge misunderstanding...

Extra

Shinjou Shouryuu is a healthy 17-year-old high-school boy. Many of his kouhai wonder why such a great guy doesn't have a girlfriend. Ask him and he'll tell you that between school, work, and saving his kouhais from bullies doesn't leave him much time to go on dates. So he instead goes online to "F.I.L. GATES". There in the chat room his alter-ego, Kakeru, is infatuated with the girl called Hal. Hal sends a message reminding him that Sunday will be the six month anniversary of when they first met (online) and that she wants to meet him in person! And let's just say it's not your typical first date.

This manga is about the romance and complexities of an internet relationship.

Loletta is a bride-to-be from a tiny island nation. In order to ensure the welfare of her adopted family, she decides to marry a rich man she doesn’t love. In preparation for the marriage, a mysterious man who calls himself Kuzu shows up, claiming that her dead brother gave him his heart on the condition that he fulfills a promise made to his beloved little sister. Upon hearing this, what is Loletta supposed to do?

Nicknamed “The Prude,” Aizome Maiko is a misunderstood girl who actually has explicit fantasies. When a boy with a delinquent’s face, Yajima Keisuke, ruins her dream romantic encounter, she forces him into slavery by getting him to carry out her ridiculous plan to reach the man of her dreams. What has “The Prude” have in store for Yajima and will her ridiculous plan succeed?

From Del Rey:

Out of the blue, a beautiful girl asks Kakeru to run away with her. This could be any boy’s dream come true, but there’s something strange afoot. It turns out that the girl is on the run from a shadowy government organization intent on using her psychic abilities for its own nefarious ends. But why does she need Kakeru’s help? Could it be that he has secret powers, too?

From StarryHeaven:

1) The Leopard and the Faithful Manservant:
After getting dumped the most spectacular way at the start of a new year, she calls up her childhood friend for some emotional unloading. And when she thinks things can't get any worse, she gets her wrist broken by the car accident caused by her friend. She then commands him to be her slave until her wrist is healed.

2) A Fiery Kiss on a Rooftop:
With the party girl's hands forced by her parents to either get a teaching license or have her allowance cut off, she caves. Begrudgingly, she sets off for her practicum at a high school.

3) His Feverish Glance:
With her wedding nine months away and a comfortable life seemingly in her lap, she helps a handsome stranger out when he was being pursued.

4) The House Touched by a Spirit:
A trip with her married co-worker to Hokkaido ends disastrously after he chickens out after his wife contacts him. The girl tries to hitch a ride to town from a passing stranger but he brings her home instead.

Bianca is the last remaining "ugly" witch in the Underworld. Will she muster the courage and self-confidence to find love?

From Rayns&Lele Scans:

Demons will grant any human one wish in exchange for their soul. Anzamnia, an ambitious demon, has fallen to the bottom of the chart, having collected zero souls. After being kicked out to earth by the police, he found himself in Japan, in search of a human contractor in order to get back home. Then he crosses his way with a lonely little girl, who is convinced he is an angel sent from Heaven and insists that he grant her wish and form a contract with her, knowing it will take away her life? Anzamunia's first contract is formed, and her wish is... for them to get married?! So starts the blissful married life of this adorable and idiotic couple.
A marriage of different races, ages and personalities will now commence!

Ikebukuro, Tokyo—a neighborhood where twisted love prowls!! A series of street slashings in Ikebukuro begins to connect total strangers: A teenage girl with no personality of her own; a beat writer for a third-rate tabloid; a teacher suspected of harassment; an informant based in Shinjuku…and a headless rider straddling a pitch-black motorcycle!! Meanwhile, the slasher continues to terrorize the night, all in search of…“him”!?

From Shinmakoku Scanlations:

Tomoki is a playboy who thinks only about sex. But Kazuyuki, who's supposed to be his sex partner, confesses his love to Tomoki. Even though he thinks of this as a bother, it starts to develop into a love game! It's a bittersweet love story.

*Chapters 3 to 5 feature weird rank-obssessed glasses senpai from Love Home and his subordinate.

A collection of short stories:

1 Junjou Erotica (Pure Erotica)
Heartbroken by her first love, senior high year 2 student Rika develops a fear of romance. One day, she finds out her first love's weak point! From then on, she starts her revenge...

Extra: Passionate Erotica (unscanlated)

2 Renai Teppen Shugi (Romance Summit Principle)
The two most popular people in school, Rinko and Shirou, are pretending to be a couple to keep people from confessing to them. Rinko is slowly falling in love with Shirou, so what happens when someone finds out about their fake relationship?

3 Romeo na Kanojo (My Girlfriend Is Romeo)
Seiya was the prince of his school until a new girl, Ryou, transferred in. "If I can't win against her, my only other option is to make her fall for me!"

4 Ouji to Kiss to Nemurihime (Prince & Kiss & Sleeping Beauty)
Shiya has a phobia with boys. What can she do, but ask the almighty ?prince? of the school for help? The prince is shocked that this girl doesn?t like him, and decides to make her fall in love with him! But Shiya has a weird curse: every time a boy touches her, she faints!

From Evil Flowers:

Kurosu Riri is very bored with her school life. In an attempt to do something new she tries to form a band with Ayata and Jin. But something is still missing, a former member, Ruki Sugisaki is needed in order to have the complete band. The only problem is that he's in a fight with Ayata. Will Riri be able to make things work for her band and make Ruki join? Better yet, to have it formed before it falls apart...

From Adachi's Universe:

Slow Step follow the adventures of school girl Minatsu as she looks for a man and tries to stay on top at school. She's got the school bully to worry about, two potential suitors, a pervert for a PE teacher, and a gang of criminals in hot pursuit.

A ladies man and a recently un-spellbounded prince have one goal: to kiss the sleeping princess! However, both men get more (or less) than they bargain for...

Follow this slightly twisted, yet amusing version of Sleeping Beauty.