Seikimatsu Tantei Kurabu is dedicated to the very gay and very passionate love of Sherlock Holmes and Doctor Watson. I suppose that it could even be called a doujinshi, since it's blatantly based on Conan Doyle's work, and many of his characters make appearances throughout the story. In fact, the main story is split into three sub-stories -- each one focusing on a different aspect of the Holmes/Watson relationship.

The first story is titled Paris Fin de Siècle, and is a light-hearted introduction to our protagonists. There's a little fluff, a little humor, a sardonic reunion with Arsène Lupin, and a sexually charged scene of boot-licking. (Actual boot-licking. Not the metaphorical kind!) There are also fabulous kisses, cross-dressing criminals and unusual confessions. No smut so far, though. That comes later on. Oh, yes.

The last two stories are based on actual Conan Doyle plots. The second story is based on and named after The Adventure of the Three Garridebs, and the third is similarly inspired by A Scandal in Bohemia. It's wonderful to see Conan Doyle re-interpreted through a yaoi mangaka's eyes! It's particularly rewarding to see Holmes undergo a paradigm shift after Watson is shot in The Three Garridebs; Holmes realizes that he can't take the good doctor for granted anymore, and that his old friend has become so much more than a friend to him.

From SAKURA Chitose Fan Page:
While running to her new school in the morning of her first day, Marimo has an encounter with three guys from her school, that leave her a strange pack. Later on, in her class, the three guys appear again and kidnap her! Marimo is very scared until she realizes that they want the pack again... as it happens, they are the members of one of the school clubs... a club dedicated enterely to Kero-chans and their merchandise! (These are that typical cute Japanese green frog....) Marimo enters the club and starts to fall for the leader, but this, of course, is only the start of the fun....

Ever since they met at a TV recording in a playground, Senbonmatsu has always looked up to the character Dr. Red. When he finally gets his break in the same drama, he gets to know the actual person behind Dr. Red's mask. But is Dr. Red really the hero that Senbonmatsu thinks he is...?

A collection of stories involving the cast of the hero show Dr. Five.

Oba Tamako tells of her time being at art high school.

Very short story about a secretary in love with his married boss.

Follow the story of Tatsurou Shinozaki, a priest and private investigator who works to solve strange mysteries involving mystical influence. One day a woman comes to his church looking for the mysterious red penguin. She uses a post-hypnotic suggestion on him so that when the phrase "red penguin" is mentioned, he begins to hallucinate. As the journey to uncover the red penguin begins, secrets are uncovered about Tatsurou's past, including a shadowy society that may be linked to his suddenly unreliable memory.

Guy teases girl alot while he secretly likes her (or some mess like that)

Out of sadness, a man cursed all of his reincarnations. To alter his unhappy fate, Ryou will travel through time and space, dream and reality.

Mitsu and Hiroki are close friends, and Mitsu knows Hiroki loves him. One day, the relationship between the two becomes dangerous and is about to be destroyed.

A short story about the time between spring and winter . When the spring get up , the winter will disappear ...

The series appears to be a sequel to the earlier SD Gundam Musha Maruden. Official relations were formed between Earth and the land of Ark. At an inter-racial school attended by humans and Mobile Citizens, young Ryuunosuke befriends fellow student Kokuryu. Life at the school can sometimes be fierce, with student gangs seeking to disrupt the harmony. But in the face of this, Kokuryu reveals a powerful ability- although he normally looks like a little kid, he can transform into the maturer samurai warrior Kokuryu Gundam. The series initially involves his battles against similar robotic creatures along with Gundam friends such as the bishōnen Hakuou Gundam and good natured/rough and ready Sekijishi Gundam. Eventually a mysterious group emerges, forcing Kokuryu and company to leave simple schoolyard scraps behind and engage in life or death combat. The general merchandising gimmick for this series involves the Gundam's being able to combine. This is similar to the gimmick for the series Transformers: Energon

1-4) Suzuhara Jan is a new college student determined to devote himself to his studies. But a chance meeting with handsome professor Aoyama and discovery of the "Game to Win the Professor's Heart" become a distraction. Though he can't seem to stay away from Aoyama, the game may be impossible to win...

5) Takashi Namasami is wandering lost in the woods when he's found by young master Wakamiya Hideto. But the pushy youngster has a requirement for rescue: Takashi has to be his pretend lover!

The baseball club has only two members. These two guys are at their wits' end, fearing that their club will soon be disbanded. Enter a weird girl who claims to be the "No.1 High School Baseball Manager". Her goal?
To get to "The Land of Baby Cows" - or as a more sane person would put it - Koushien!

From Blissful Sin:

1-2) Scarlet
College student Akio is dating his beautiful classmate, Ryou. Unable to stand the slightest loneliness, Ryou accepts any girl who approaches him. One day, Ryou introduces Akio to a girl he is thinking of marrying which makes Akio decide to completely break it off with Ryou. Instead, a heart wrenching love story takes stage!

3-4) One Night Stand
During the day Harumi is just a normal businessman but when night comes he changes into a different person.

5) My Lover
Keito wonders why he is still in a relationship with the overly depressive Naoki

Midori is a high-school-aged lesbian who has just been rejected, driving away one of her few friends. In the world right now, there are creatures called "Extraneous" that appear out of nowhere, kill people, and disappear again. No one remembers when they started appearing, but the chance of being killed by one is about the same as the chance of dying in a car accident. Midori's mother was killed by one a year ago, and not only is her father rarely around, he's also deeply in debt. She gets attacked by an Extraneous on her way home, but is saved by a mysterious girl who claims that she's a god. Midori names her Hitsuji (sheep) because of her horns, and takes the girl in. They start a website, Hitsujiya, an Extraneous-fighting service provided by Hitsuji.

From TCMANGA:

Just like an ordinary girl, Momoka enjoys her boyfriend's company, eating breakfast together, dating, etc. The only difference is her boyfriend, Hiro, is an upcoming actor in the entertainment industry. Therefore their love life has to be kept in secret. But Hiro's manager wants them to break up in order to not taint Hiro's popularity...

Also includes 2 extra stories.

From Midnight Scans:

Sensei, the person whom I long for, whom I wait for, whom I love, and whom I want to be with. At night, I always think about you, Sensei. You are similar to me, but you have a completely different personality. The moment I fell in love with him, school has become a different kind of place because of him. The love between me and Sensei has begun to grow.

Includes the oneshot, Fake Letter.

They are cool! They are hot! They are irresistible!
No girl will refuse to share her bed with these Sensei.

1 & 2: Baby, Baby ー A Narcissistic Scriptwriter by Takahashi Yuu (高橋ゆう)
While enjoying a meal with her friends at a restaurant, Miyako expresses her dislike for the famous & handsome scriptwriter Yuuji and calls him a narcissist. Yuuji overhears her and gets really pissed off. Later he encounters Miyako as an employee of the publishing company he has recently signed a contract with.....

3: Higurashi Naku Yuugure Ni ー An Intellectual Librarian by Saionji Michiru
Touno Sensei's wife passed away 3 years ago and since then he had locked up his heart. He wanted to lead the rest of his life in the memories of his wife and so he left his teaching job and diligently started to take care of the library his wife left him. Nene who was once Touno-sensei's student is now a regular at his library. Nene has a hidden dark past due to which she has grown averse to love. Can these two scarred souls find solace in each other?

4: Love & Peach ー A Perverted Doctor by Ashika Nozomu
Izumi is suffering from haemorrhoids. She visits the hospital for treatment but slaps the proctologist Dr. Shuu since she mistakes him to be sexually harassing her. Coincidentally, that evening, Shuu and Izumi meet at karaoke on a group date and things start to get interesting...

5. Sweet Teacher ー A Confident Trainee-Teacher by Earithen
Kiori is currently working as a trainee teacher to obtain a teacher's license without which she won't be able to graduate from the Department of Education. But the problem is that she doesn't really aim to be a teacher and so she slacks off in her duties. Her perverted supervisor offers to help her get all the required credits in return for sexual favours. Helpless Kiori yields to his demands. Can the good-hearted Kazama-kun, another trainee teacher, save Kiori from being taken advantage of?

6. Ai Wo Hore! ー A Cute Homeroom Teacher by Koishikawa Funi
After being betrayed by her first love, Futaba believes that she can't fall in love ever again. She feels herself buried under a huge pile of snow because of the unexpressed feelings that have been accumulating in her heart. Can the cute child-like Horishi-sensei, her new homeroom teacher, melt her frozen heart (and body) ?

God has been dead for some time, and the angels in heaven have decided it is time to find a replacement. Though very reluctant, the angel Rain has been chosen as one of the four candidates in for consideration to become the next god. He and the four other candidates will decend to earth for one year so that they may perform a test to determine their suitability for the position, with the ability to reveal their true identity to one human being of earth. Thus, Natsume Shirou, a very normal high schooler with dreams of becoming a teacher, is chosen by the angel Rain to be the help. As for the test, Rain and Shirou must raise a 'baby', with no thoughts or emotions of its own, into a creature as close to a human as possible