From Chibi Manga:
"I'm going to be a boy starting today" It's so much fun after quitting being a girl!!
A girl inside a boys' high school! A monkey girl is passing by!!

As a young girl, AhSoo was involved in a plane accident. Years later, she has tried to move on from the incident. Everything seems to be going well, until she meets a person from her past. A transfer student has arrived at her school, and he is directly responsible for the plane accident AhSoo was involved in years ago.

From Esthétique:

Akechi Mitsuhide, who resided under the roof of Saitou Dousan, hid himself in Nobunaga Oda's palace Owari under the guise of a marriage with Dousan's daughter, Nohime.

Before long, that fated meeting was bound to create a great change...

Honnou Temple burns with the fires of love and hatred. A dazzling story of love and romance in a country ridden by civil war!

Orginal Webcomic

From Spoils:

A School Pop Comedy!

Masaki Aoi is a high school student with a sweet tooth. All her life she has been treated like a boy but change is on the horizon for this tomboy! Yuase Takumi is a third year middle school student. He's also the president of the Confectionery Club, and he's extended an exclusive invite to Aoi to join his club....too bad he thinks she's a HE! But pressure from her classmates forces Aoi to play along and she finds herself joining the Boys-Only Confectionery Club.

What will await her?

[From Storm in Heaven]:

Sei Kagano has an angel gene, which gives the bearer special powers. For Sei, every time he smells roses, he transforms into the White Maria, a heavenly lady with the power of prophecy. Malloy, who bears the angel gene that turns him into the Black Maria, has hired men from the United States to eliminate Sei so he can continue on his quest to remake the world. Three guardians, the male modelling unit N'est ce Pas, go undercover to protect Sei. Two of the guardians, Toki and Kishou, also carry angel genes. Toki, however, seems to be more attracted to Sei than a guardian should be...

A collection of short stories. Note that the vast majority of these stories contain heterosexual romance themes. A few stories explore transgender issues, but it's a stretch to call them shounen-ai or BL romances. This series demographic is josei.

Le théâtre de A
1.Oeufs D'ange - Tenshi no Tamago
A man is asked by a young painter to be her model.

2. Velvet Going Underground
A doll becomes a super idol. Hijinks ensue.

3. Childhood's End
Alastair runs away and meets the Rabbit.

4. Bite Me Something
Allistaire followed Mr. Rabbit all the way to Wonderland. Will he be able to find him among the crowd?

5. Long Along Alonging
A girl asks a vampire to be his apprentice. But what is her motive?

6. Till Dawn
In a dark tower, a caged voice is singing until a hunted man enters the darkness.

7. Leçon un
Sequel to Long Along Alonging.

8. My Skin on My Back

9. Highland Walker
Sequel to Leçon un.

10. Perfect World
The story of a young wife whose husband is infected with a fatal disease called Flower-Blossomitis.

11. Perfect Lady
Sequel to Perfect World and drawn especially for this book.

12-13. Looks Like a Teaspoon
A boy named Allistaire is often teased at his all-boys school. One night he dresses like a girl and stumbles upon the boy who often bullies him, Simon. Allistaire runs off into a tower and as Simon runs after him, we see the sign "Welcome to Wonderland" hanging by the tower's door.

14. The Pearl Blue Story
Do you believe in mermaids? Coggy, a young boy finds a mysterious lady laying down near the shore of the beach. He brings her home to help her.

15. I Am a Piano
A piano tells the story of her life and the people she encounters.

16. Parade

Le théâtre de B
1. Noël
A short story about a holiday romance.

2. Teddy Bear Satsujin Jiken (The Teddy Bear Murder Case)
Four murders have taken place at an all girl school. Lying beside each of the victim was a teddy bear with one missing limb.

3. Yonshimai Satsujin Jiken

4. A is for Alice
Alastair, a grown man, is off to follow the Rabbit once again to return to Wonderland.

5. Nedai no Musume Atelier no Musume (The Bedroom Girl, The Sculpture Room Girl)
A story about a girl in her death bed finding another chance in life in the body of a doll.

6. B&W (Black&White)
A story about a boy waiting for his sister.

7. Le Jardin du thé (The Tea Garden)
A mysterious story about a poor young man who orders a kind of tea called Huan Ying – “The Illusion”.

8-9. Free Fitting for Her
A priest and his captured vampire must save a naive and selfish young girl from the murderous desires of a Lolicon. But perhaps this girl isn't all that she seems.

10. Rose Dusk, Pale Moon

11. Hello, My Sister

12. The Happy Prince

13. Welcome to Wonderland
Simon, Alastair's old classmate, is now a grown man who bumps into his childhood Wonderland traveller.

All the high-school girls in town wake up one morning transformed into old men...followed by some pretty awkward situations where they fall in love with each other. Are they lesbians? Gay? Or is this a fujoshi's dream come true?

In the Oyajina! series:

V.1 - Chinatsu to Tomoe no Baai
V.2 - Ryuu to Murasaki no Miya no Baai
V.3 - Oyajina! - Otaku no Shiro-chan no Baai

A guy is pulled into an neo-classical world through his dreams, however he has become an eroge's heroine.

Urara would really like to be a normal high school girl, but her mad scientist older sister and mother make this a difficult goal. For their latest experiment, they've fused Urara's neighbor and childhood friend Takaharu into Urara's body. After discovering this, Urara destroyed some of the experimental apparatus in a fit of rage, leaving them stuck with each other for the time being. Takaharu is a high school graduate who sells erotic manga while waiting to retake his college entrance exams. Takaharu takes over Urara's body when she falls asleep or passes out, and, to Urara's embarrassment, has been using it as source material for his manga. Will the two of them be able to deal with sharing a body until Urara's family can put things right?

In this retelling of it's Prequel, Migawari Hakushaku no Bouken, Frederick talks about his observations of Mireille.

[Transcendence Scanlations]

Yuuki is a girl who lies about her gender to enroll in the theatre department of Getsuryou academy, an all boys' school where all the students are required to stay in the dorm. While hiding the fact that she's a girl, every day, she tries hard to study acting, the subject that she loves so much. One day, an upperclassman, Riku, found out her secret, causing Yuuki to be very worried, but she gradually got attracted to him. At the same time, she came to know the real reason why she was brought up as a boy...

"Wedding Theme" is a historical romance, the setting is same as that of the "Romance of The Three Kingdoms." This manga creates a entirely different image of Zhou Yu who is portrayed more as a bad guy in "Romance of The Three Kingdoms." But, Zhou Yu is dashing, handsome, and young when he meets the heroine of this manga...

Tsuyomaru is a girlish boy while Hazumi is a tomboyish girl. Tsuyomaru is challenged to a fight by a student of another karate school, and while using a training machine operated by Hazumi, something goes wrong and they switch bodies...

Pursued by the mob, a young child seeks the protection of White Dragon, a deadly assassin with the ability to disguise his gender, and kill using... water.

An adaption of various short stories written by Yamada Fuutarou.
First story: "Kunoichi Kokihei"
This story begins the year before the Battle of Sekigahara, in the pleasure quarters of the capital.
Kagerou, a real beauty who is a child of the Ootani family, meets five of the most powerful men of the Uesugi clan while serving at a brothel.

A collection of extras from creators in Shueisha's Margaret shōjo manga magazine to raise funds for the victims of the Great Eastern Japan Earthquake disaster.

1) Yumenara Samenaide
Sachika got involved in a traffic accident, and she fell into a coma. The moment she awoke from it, the one waiting for her wasn't a family member or her boyfriend Tetsuo, but a man she didn't know. He introduced himself as Kohara, one of her relatives, and he took her to his house. Sachika gradually felt that something was wrong, and she came to know of a shocking fact...
- Aerandria Scans

2) The Rainbow Love Song
A girl meets her prince charming - just to find out things aren't what they seem like soon after. Dejected, she tries to make the best of her current situation, but then the past life mixes with the present life...

3) Beauty and the Beast
Comedy about a tomboy and her unmanly childhood friend.

From Aerandria Scans:

A collection of bitter-sweet one-shots by Suzuki Juleitta, featuring the starting point of Kamisama Hajimemashita. The titles of the one-shots are:
1. Asa ga kuru
2. Hoshi ni naru hi
3. My bloody life
4. Sakura chiru
5. Ogamiya ura daichou
6. Camellia cage