From Fantasyshrine:

Up and coming interior planner, Takamori Fumito, is having an affair with Eto Shunsuke, the president of the company where he is working, despite the fact that Eto is married to an owner of a famous fashion apparel. From the very beginning, they made it quite clear that their relationship is strictly physical. However, Takamori realizes his heart is now in danger— a story about adults struggling with love and sex.

Yi Myung lives with his father. Though he possesses memories of his childhood just like everyone else, there are times when he feels like a stranger in his own home, in his own skin. He has no friends at school, and his father is alternately too cold or too loving to be entirely normal.

What, really, is going on here, and why do random people who sometimes meet Yi Myung on the streets seem to know him as someone else?

Otona to Kodomo no Kyoukaisen (roughly means A Man-Child's Boundary Line)

From Peccatore Sanctuary:

Tohru is confused and in deep trouble. After the 'thing' with Takafumi - a senior high student, Tohru can't get him out of his head. Tohru swore that he will wait until Takumi is legally an adult he will not do 'H things' (perverted things) with him. However, both are finding it hard to keep their urges under control... this is when the line between boy and man becomes conveniently blurred...

As Asuka dreams of marrying a wealthy man, she has polished both the appearance and mind. Now it is rumored that she is the coolest beauty in the secretary division of the company. However, one of her friends ran away with the elite who she wished to marry.

She had a drink in desperation, and slept with Yuroki, a nephew of the president of the company. Meanwhile, Yuroki is assigned to the secretary division, and the delicate relationship between him and Asuka begins. Asuka who is naive, though she is a capable woman, and Yuroki who is capable, though he is a greenhorn, develop a sweet love in a mature way.

Also contains a oneshot called Love Your Way.

Six months ago a book store manager taught high-school student Minami a lesson about loitering and gave him a job. Since then Minami finds himself slowly falling in love with his strict and sometimes violent manager.

Two radio hosts finish their second show and are getting ready to head home. However, one has a different idea...

From Kawaii Scans: She is your stereotypical airhead school girl, with one exception, she has amnesia. She recently transferred into a new school where things work different, mainly magic. She is Mochiduki Tsubomi, and she doesn’t remember anything before she transferred. Enter yet another transfer student – the beautiful yet arrogant bishojo, Izayoi Yukiji. She’s after Tsubomi, but why? What does Yukiji want? What mystery does Tsubomi hold?

A young girl, Onaga, discovers her neighbor, Kashiwabara, in his balcony one hot summer night, dressed up in women's clothing. A unique relationship between them ensues. From the mangaka of Aku no Hana (Flowers of Evil) and Happiness.

Yoshimi, who has a strong attachment to food, meets the resourceful lunch box boy, Endou. As he is being fed, a strange desire began to grow...

Collection of 23 stories about love in the everyday life of the Japanese.

1. His Scent
A woman reflects upon finding the scent of her lover from two years ago.

2. Heavy and Pop (♂)
A broke youngster starts selling him to an old lady.

3. Painfully from the Heart
Showing the connection between pain and love

4. Holiday
A woman spends a day at home with her depressed boyfriend.

5. Heavy and Pop (♀)
A prostitute thinks about the concept of love.

6. A Place One Likes to Return To
A young woman who meets her ex-boyfriend and has sex with him gets confused about feelings for her current lover and her ex.

7.-8. The Silent Radiance
A girl unexpectedly meets her old womanising crush.

9. Small and Lovely
An Office Lady fed-up with her surroundings looks forward to meeting her darling.

10. At the Park
Two best friends, one of them whose name is Yoko, spends time with each other as they set of fireworks at the park, but there is a meaning behind their get-together. What is the reason for it?

11-12. The Truth Behind Things
13. Almost a Weding Proposal
14. The End of a Friendship
15. My Life - First Example: Chikada
16. Kyoko
17. That Afternoon
18. My Life - Second Example: Sawa
19. My Life - Third Example: She

20. Holiday Part 2
A girl reads a shoujo manga and is left unsatisfied by the ending.

21. Sweet
A girl reflects herself cheating on her boyfriend.

22. Painful Love III
A young man is forced to choose who he loves more. his girlfriend or the girl with whom he's having an affair.

23. The First Time

Handcuffs. Whips. Candles. And ropes. My fantasy that keeps on growing, and my enduring curiosity...

Tankoubon release includes 2 chapters of Yume Yume Okiru Koto Nakare.

From Eclipse Scans:

1) Honey Prince
Minoko accidentally witnessed the secret of her junior, Akane, whom she has been hitting it off with. This Akane is much different from usual, and Minoko involuntarily…?!

2) Magic Red Thread
Tamaki and Hikari are childhood friends, and Hikari has always loved being taken care of by the gentle Tamaki. But when she is suddenly confessed to by someone else, Tamaki reveals his own romantic feelings toward her. Can she see him as man and love interest, or is Hikari only interested in his friendship?

3) If I Disappear
School nurse Sakura confesses to slacker student Kaede and the two start secretly dating. But their exchanges are tinged with sorrow, as Sakura knows that this relationship can't last...

4) Trembling Honey Taste
Teruyama Shikao is used to people mocking his name, and is always getting into fights because of it. Asakura Shizuka is different from everyone else, she has no trouble talking to a scary delinquent like Shikao and even seeks him out! How will Shikao handle the first person who doesn't run from him?

5) My Honey Sweetheart
A continuation of Honey Prince.

1) Because I'm A Boy
Yoh is in love with his childhood friend, Tomoki, who is training to be a Shinto priest. Yoh curses the fact that he was born a guy... and his lovesick heart can't take much more!

2) Shape Of Love

3) Ropes of Love

4) Lion on Friday

5) Sheep and Bandage

6) Rain of Love

7) Show Me

8) Candy and Whip

From Baka-Updates: Keita, a highschool student, witnessed a kiss scene between Shin, his close friend and Megumi senpai, a repeating student in his class. Although senpai is cute, he's a guy and when Keita criticized that, Shin started to cry and said: "Because I fall in love with him". When looking at his best friend whom he's proud because of his good looks, being changed completely, Keita's feelings get confused...

In order to save the inherited tea house, the Murakami grandson enters into a deal with a consultant who promises to reinvent the tea house's image and attract customers with a moe concept. However, in return, the payment would be made with his body.

Series of short stories focused around a host club called Fairy Tale Land that provides a variety of services to its guests. These services include (anything from sex to extreme S&M). The hosts are named after characters from popular folklore.

1) The Romeo from the Fairy Tale Land
Focuses on the host that goes by the name Kaguya and his client Reiji Matsuyama.

From Tokyopop:
The time is 972 A.D. in Kyoto, the capital of ancient Japan. Kyoto is becoming a corrupt and run-down city; selfish samurai and onmyoji, who care only about gaining political power are everywhere. To make matters worse the city is suffering from famine and widespread disease. Unable to ignore the condition of the city any longer, the Imperial Court decides to send Minamoto no Raiko, a famous samurai well-known for his archery skills, to recover a legendary gem, the Magatama, said to hold mysterious power to save the world. However Raiko also falls ill to disease. Instead his youngest sister, Hikaru, decides secretely to make the journey in his place. Hikaru meets many people, and has many adventures while on her trip for the legendary gem.

Serves as a prequel to the anime.

From Manga-Koekje: Goro Mutsumi had a bad past of having pets and full of bad luck with women, jobs, and everything else, he finds 12 beautiful guardian angels in his home to protect him and help him with his troubles.

From Attractive Fascinante:

1. I'll Deliver It
Aogaki Kouhei, a famous designer, was kind to everyone else except to Hasegawa. The weird thing was, he always gave Hasegawa expensive desserts. Hasegawa felt puzzled, but gradually fell in love with the arrogant man. While making a delivery to Aogaki on a rainy day, Aogaki dragged him into his house to wash his feet for him. Did Hasegawa have a special place in Aogaki's heart too?

2. The Other Side of the Porch
Ootomo has fallen for his neighbor, Ichikawa. The two university students attend different colleges and only meet each other once in a while outside the apartment, but will Ichikawa's little white cat help them become closer?

3. Satisfaction
Tall, studly university student Takeuchi Tomoe notices a slim classmate peeking at him whenever they pass each other in the hall. A friend later tells him he saved the pretty classmate, Shibata Daiki, from falling a while back. Takeuchi realizes he is abnormally bothered by Shibata's presence when a part-time teddy bear mascot working at his parents pharmacy reminds him of Shibata... unless there's more to that suit than Takeuchi can see.

4. The Beginning
After getting smashed at a business drinking session the night before, Atsuhiro wakes up in a foreign room to find his business client sitting on top of him. Matsukura (the client) tells Atsuhiro that he brought him home and was raped by him. Atsuhiro is horrified that he could do something like that to Matsukura... but then a second Matsukura walks in saying none of that really happened. Why are there two of them, and what really happened last night?

5. The Depth of Love
The older-brother's-friend story. Harigaya Kenichi is the junior of Ryou's nii-san. Ever since Ryou was little, Kenichi has been harassing him. Even now, when Ryou's in high-school and Kenichi is a car dealer, the unpleasant teasing continues... but perhaps it is the old "tease the one you like" routine?

6. Turnaround Time
Ookubou used to live near Shimotori... now Shimotori just transferred to work at the hospital Ookubou works at. A reunion after so many years should be joyous... but why did it end up like this?

7. 8 Mats of Suite
Rintarou was kicked out of his house by his mother... now he's living in a tiny, dismal apartment. The only thing that makes it alright is the neighbor and his college classmate, Ono.

8. Do Me a Favor
Follow up of story 1.

Akira was living happily with his mother and younger brother, when tragedy struck. In the wake of his mother's death, Akira's estranged father refuses to show up for the funeral - after all, she is a mere mistress, and he is head of the powerful Kasuga Corporation. Instead, Akira's father sends Hyougami, his right-hand man, to retrieve two sons he's never seen before.

Dragged away with his brother to live at the Kasuga estate, Akira tries to break free from his father's tyranny and Hyougami's advances. But his every effort is thwarted by the money and power of the Kasuga family. Soon, Akira realizes his well-being is controlled by the whims of Hyougami. His father's man is used to getting what he wants, and Akira is number one on Hyougami's list!

Is Akira willing to sell his body for security? Does he have a choice? Or will he find himself actually falling for the cold, ruthless and mysterious Hyougami?