An ongoing series revolving around Atsuya, who is an "Unrequited Love Maniac" and the loves of his life.

Prequel: Hatsukoi Moratorium inside Shotgun Marriage
Vol.1: Shitsuren Mania (Unrequited Love Maniac)
Vol.2: Junai Allergy (Allergy to Pure Love)
Vol.3: Netsuai Complex (Ardent Love Complex)
Vol.4: Dekiai Egoism (Enraptured Love)
Vol.5: Katsuai Catharsis (Catharsis of the Love)
Vol.6: Saiai Ambivalent (The Dearest is Ambivalent)
Vol.7: Mitsugetsu Melancholy (Honeymoon Melancholy)
Vol.8: Tooi Dearest (Long Distant Love Just Now)
Vol.9: Kyuuai Syndrome (Courtship Syndrome)

From Starry Sky Scans:

Your opponent: a BABY + Current state: a lot of PANIC = Result: a JOYOUOS occasion!

Konno Wataru, an only son who is rich, studious, and quite prideful, has a “butler”. In charge of him is the domineering sadist Azuma, holding an official caretaker license and to top it all off, he’s perverted (?!) Amidst their instinct of a cat-dog relationship, things get a bit risqué.

—During which, Wataru’s older sister’s baby, Momoka, suddenly appears! With a MIA father, Momoka’s care is left in their hands!

In between the teasing, puzzled Wataru unexpectedly witnesses Azuma’s sincerity …however…?!

A spin off presented from the super popular “Dekichatta Danshi” featuring Yujiro & Hisui.

"Why am I in a place like this...... kissing HIM......?'' Awkward class loner Mitsuo Hanaori has a pet peeve - the handsome and popular Hachiya, who's always at the center of the class. He has soft hair and clear skin, everything comes easy to him, and his voice is easy on the ears - it's all just so irritating...... But Mitsuo can't take his eyes off Hachiya, who scores perfect shots in basketball class, and he twists his ankle as a result. After helping walk Mitsuo to the nurse's office, for some reason Hachiya suddenly brings his face close as if to kiss him!! Mitsuo's freaking out and his heart's pounding like crazy, and to his mortification, his JUNK is responding......! To make things worse, ever since that day, Hachiya's started coming onto him on a daily basis...... Just what the hell is going on!?

Sakura who has been assaulted by the world’s expected ex-boxer winner, Igawa, and is gradually taught and becoming more, and more lewd…!

Not every person can be happy about having a boyfriend that works as host. Katsuzou is one of those that have something against. To express it he throws at Tomosa (his love interest) a fire extinguisher. Luckily, it didn't kill Tomosa but it seems like he has lost his memory... What in that case will Katsuzou do?

1-5) Honey Baby
Already wise to the world and yet still naive to love, 14-year-old Aizawa struggles for affection from the one he loves, his 27-year-old teacher, Tachibana.

6) S
Kaoru is a guy who likes to play the field. He says he's in love with someone else yet in spite of this he still has sex with Junya out of convenience. Seeking pleasure, the two would meet casually several times a month to have a few drinks together and spend the night at a hotel. There was never any sort of confession, but both made known to each that this was nothing more than a sexual relationship. They still haven't gone all the way though and Kaoru never forced him. These sometimes gentle, sometimes sweet situations are starting to give Junya doubts about what their relationship really is. The tension that Junya feels from jealousy added with his uncertainty with what Kaoru feels for him confuses him further and he wonders was love ever there?

7) That's Another Law of Love
Kikuchi has been ruthlessly dumped by his girlfriend, and his classmate, Yada, volunteers to cheer him up. But Yada has his own secrets, which eventually come out, confusing Kikuchi. Bitterly, they both want to know, Why does Love + Sex have to be Man + Woman? Or does it just have to do with love?

8) High Standard Impression

A divorced man who seemed to have had a one night stand with his children's kindergarten teacher.

The title roughly translates to "My son's been taken care of"

From MegKF:

A talented young Japanese chef deals with working for the father of the only chef who always gets the best of him. But what are they going to do as this rivalry develops into something else?

There are two extra at the end of each volume. Volume 1 extra is called A Man You Can't Resist. Volume 2's is an extra from Boku no Koe, My Changeable Voice.

From Nakama:

When the unmotivated editor of a mahjong manga magazine, Sakaguchi, stops at a convenience store in the middle of a business meeting, he is reunited with his senior high school underclassman, Fujishiro.

Fujishiro's ability forced Sakaguchi to abandon his dreams of becoming a mangaka, but Fujishiro has stopped writing and is living the life of a part-timer.

In order to get Fujishiro to draw manga once more, Sakaguchi meddles in Fujishiro's business.

With its novelty, Fujishiro's manga becomes popular, and when he's lured away by a major publishing company, Sakaguchi thinks that that is the end of their relationship ...

The title work of the story of the ten years' desire of a violent editor and a useless mangaka, plus the sequel of the popular mangaka and his manager, now a couple, and others, all compiled in a single volume -- a brand-new work compilation!

A father and son love each other dearly. But when Emily, a girl from Kazui's past, visits them in Japan, their relationship starts to crumble under the threat of their own thoughts. . .

There is also another one by the same name scanlated by nodeadline by the same author but a whole different story.
Basically one doctor is in love with kazui (not sure if it's the same one from nakama version,) and another dr is in love with him, it's quite a sad and tragic story, but its a good one.

A direct continuation of Umibe no Ètranger that explores Shun's and Mio's family situations.

"I'm gonna take care of you forever...."

College student Minami Shougo regularly visits the office of Kanbara Kenji, a designer prodigy he has been close to his entire life, and whom he loves. Ever since he was a child, Kenji has always been studious and selfish... And Shougo, despite being younger ends up taking care of him. Other than the main story, you'll also find a love story between reunited childhood friends, and a romance starting at a restaurant... This is a collection of dreamy love stories!

Set in ancient Japan, involving many explicit steamy sex scenes. Shirou and his little brother are captured by bandits, and he is given two options: become the leader's sex toy, or watch his brother die. (And just wait 'til his brother grows up... sexy boy...) Unlike some other hardcore yaoi, this story *does* have a plot and can be rather sweet and sad at certain moments.

1. Shigekiteki na Kankei
Kaiya has become bored with his sex life lately, it's just the same things over and over again, even with his frequent change of partners. When he finds a book on S&M dropped by reserved coworker Makise, Kaiya finds the idea intriguing. Suddenly he can't stop thinking about making Makise his very own M...

2. Motto Shigekiteki na Kankei
Playboy Kaiya never thought much of his coworker Makise, until a series of events led to the night Kaiya was raped by him! Makise turns out to be handsome and sadistic, taunting Kaiya every chance he gets. Now Kaiya can't perform as a top, but he has no intention of becoming a bottom. When a chance visit to an S&M club gives Kaiya a brilliant idea for revenge, how far will he go to teach Makise a lesson?

3. Kimi to Aruku

4. Shihai mo Sokubaku mo

Suffering from unrequited love, Todou Tsukasa, also called "the moody pillar", walks into a barbershop. The cheerful barber not only gives him a sexy new haircut, but also advice on how to better carry himself. Tsukasa takes that advice to heart and goes on to fame and success. But he never forgets the barber who helped him when he needed it, and so, he keeps dropping by the barbershop. However, confidence didn't come along with the new haircut nor with the fame and success, and his feelings are neither conveyed nor understood well.

Includes a really cute series of short stories about an eclectic band and their love interests: the flamboyant lead singer's long-time love for his kouhai, the reserved guitarist's secret crush on a convenience store clerk, and sex-addict drummer's one-night stand with an unwilling businessman.

From Cidsa's Scanlations:
When a man is found lying unconcious beside a river he is carried back to a house. There they call for the doctor (Azuma) to come and take a look at his wounds.

Azuma himself has problems with touching other people. Why can't he allow some people to touch him at all?

The man ends up being one from Azuma's past. He is now a wanted criminal. Can Azuma prevent him from going to prison?

Miza Yuuji is the so-called ‘beautiful priest’ of Uguisuzaka Shopping District, loved and respected by all not only for his skills as a Buddhist priest but for his demure demeanor and kind air. While he professes to have pledged himself to the cloth, vowing to remain unmarried and celibate for life…he’s harbored a crush on his best friend Saburou since middle school. Now that Saburou’s back in town, taking over his parents’ tofu shop after an eight-year absence, Yuuji must deal with feelings he thought he’d long since moved past—and that’s when he gets drunk one evening in Saburou’s presence.

From Bliss:

Eiji and Kouki are angels whose mission is to guide souls to either heaven or hell. Eiji, a black angel, guides corrupted souls to hell, while Kouki, a white angel, guides pure souls to heaven. Both have to work together as partners to accomplish their task. However, God cannot forgive black angels for their accumulated sins, and only gives white angels the power to reincarnate. Though Eiji develops strong feelings for Kouki, can he escape the cruel fate that God has given him?

Kaede is a rabbit person chosen to be the 'bride' of a distinguished wolf family. Although he does not wish to marry a wolf, his family pleads for him to go so that they can have enough supplies to last for the next two years. However, how will his new husband act towards a little bunny rabbit stuck in the wolf's den?

A series of oneshots.

1. Traces
After his roommate left, Katsumi feels a presence in the room that tries to violate him.

2-3. Midori no Himitsu & The Day After
Mizuki and Fumiaki are cousins that haven't seen each other for nine years. Now that Fumiaki transfered to Mizuki's school and stays at his home they should get closer but Fumiaki doesn't talk about his home and distants himself from his classmates. Moreover, the plants around Fumiaki act strange.

4. Traces 2
Continuation of relationship from chapter one (timeline after second story).