From MangaHelpers:
One day, Son happened across a woman, named Shue, that he had loved as an older sister when they were young. It looked like it was the same woman, with the same scars, but Son had thought she was dead. In fact, she was a reanimated corpse, resurrected by a young girl named Fuu to work as her minion. Son becomes Fuu's follower, determined to find a way to return Shue's soul to her body so that she might live again. However, Son doesn't know what he's gotten into with Fuu, though, as she ends up in conflict with many other practitioners of her arts, using Shue's reanimated corpse to do things that Son would rather have never seen.

From MangaHelpers:

"The Sixth Dimension Experiment." This experiment, in attempting to open one of the eleven dimensions in our reality, the sixth dimension (Secht), resulted in a catastrophic explosion that killed 110 million people and left 12 countries in ruins. The originator of this experiment, Himeka Yuki, bearing the total responsibility for the failure of this experiment, has been banished from reality for eternity. In response to this event, the world leaders in sciences formed a monitoring agency known as "Zeien" to keep control of all scientists and technology in order to prevent another Sixth Dimension Experiment.

10 years have passed since the incident. Takaomi Yuki, the younger brother of Himeka, notices a change in the "Time Machine Destination" that his sister has given him before her banishment. Suddenly, the device summons a lively girl armored with metals he has never seen. "Takaomi-san! To save Earth, pull out your lance and ride me!" To uncover the truth, the two will begin an adventure that crosses time and space. [DrCoke]

1-2. House
3. Kagami yo Kagami (Mirror Mirror)
4. Kowai Yume (Nightmare)
5. Fusuma (Half-Open Door)

From Animeraider:
When 16 year-old Haruna runs away from an arranged marriage, her parents force her younger twin sister Wakaba into the marriage instead. But while Haruna ran off with a boyfriend, Wakaba has never even been kissed. How will a high school girl survive going from nothing to full on marriage with no steps in between?

A collection of six of Yotsuhara Furiko's short stories depicting the love between various girls.

The title story is set in a university, with Yuriko, a girl of the jou-sama type, being followed around by her puppy-like female friend Koroku. While eating lunch one day, Yuriko overhears some malicious gossip and her ensuing bad temper leads her to take Koroku to a hotel, where she tells her to do whatever she likes...

1. Laika, Pavlov, Pochihachikou
2. Koi o Egaku Hito (One Who Depicts Love)
3. Kuchisaku Onna to Teppeki no Shojo (Lip-service Girl and Iron-Walled Maiden)
4. Crow Nureba ni Hikarimono (That Which Shines on the Soaked Crow Feathers)
5. Koibumi Miman (Insufficient Love-letter)
6. Chopsticks

From Ikemen Scans:

After his parents go overseas for a few months to work, Kouta, a college student, gets to live in the family house again with his brother Tetsurou, who came back from Tokyo to keep him company. Kouta hasn’t seen his big brother for six years, and doesn’t really get along with him. The situation soon gets awkward when Kouta realizes he doesn’t know anything about his brother... And it gets worse when he becomes aware that the antipathy he felt towards him, might be more ambiguous than he previously thought...

N/A

Collection of the author's best works:

1. Dead End

2. Odamari! (Shut Up!)

3. The Tenth Ten Commandments: About a girl who bonds with her brother's fiancée.

Hika Souma, called Picasso by friends, is 17 and still without a girlfriend after being dumped 13 times. One day, a pretty girl who later introduces herself as Sujata drags him out from a moving train, and with her unwanted assistance, his childhood trauma toward demons (oni) takes the form of a real demon summoned out from his body.

N/A

From Chibi Manga:

Ritsuka and Kaze-kun are currently lovey dovey, but Aizawa-sensei who is extremely beautiful and has the perfect body just started working. Is Kaze-kun also excited over sensei’s enormous breasts? With the appearance of a rival, Ritsuka is in a bind!
I want to be my prettiest when I am in senpai’s field of vision…
Hayashi, Ritsuka’s friend is the main character in the extra story. This is an extremely happy compilation volume to the Koigokoro series!!

From Bakeneko Scanlations: Tanaka Hajime and Harada were leaders of the yakuza group called Yanase. They were wiped out in the conflict between the Yanase group and the Kawa-guchi. The Kawaguchi group thinks that they killed Tanaka Hajime and buried him. Tanaka Hajime was saved by Harada, though he has lost all his memory. Knowing nothing, as Harada asks him if its a lie, Hajime states why would he. Then is when Harada tells Hajime that they are lovers. Is this true?

A collection of bizarre, twisted one-shots with horror, supernatural and psychological themes.

*Included in the re-released edition of Tetsunagi Oni

Compilation of short stories:

♥ KOI-MOYOU ~Sururi~ (Speedy)
Kanami agreed to date Hoshitani on impulse, but over time as she gets to know Hoshitani better, she learns that he slept with his ex-girlfriend, Sae, which makes her feel insecure. This is doubled when Sae's boyfriend, Takatou, kisses Kanami...

♥ KOI-MOYOU ~Tokubetsu~ (Special)
The popular teacher of the school, Sagara, finds a student, Nanami, looking for something in the grass. As he watches her struggle to find a lost object, he finds himself falling in love with her.

♥ KOI-MOYOU ~Kokoro no Akira~ (Whereabouts of the heart)
High school doctor Mai (24) has a "white robe obsession" as her first love was a doctor who treated her when she was 5 years old. She's currently dating a doctor, Konno, who she is deeply in love with even though she knows he's cheating on her. One day she finds someone who looks exactly like her first love.

♥ KOI-MOYOU ~Healing Love~
I was in love, and I was hurt to the extent that I would no longer fall in love... The guy I met was broken-hearted, too.
A friendship and love that started with a shared passion for books.

♥ KOI-MOYOU ~Himitsu no Koigokoro~

♥ KEINAIHIKARI

I received a help message from Benishiro, when I arrived I found him...Notes: Names will differ from original

Includes 4 works that were published over span of 10 years:

1. 1 Gatsu no Merry-Go-Round
A high school girl has a crush on a boy two years younger, but she has always insisted she could never date a younger guy.

2. 3 Gatsu no Dai 2 Button
A girl realises that she likes her childhood friend whom she's always joked around with but never thought she thought of that way.

3-5. Onna no Ko wa Genki!!
About three fifth-grade girls (Chisa, Nanami, Yuula) who are best friends.

6. Basket Girl!!
About a girl who practices hard so she can be a starter for her basketball team's last match of the year.

From: http://kanata.dreamwidth.org/1308413.html

From September Scanlations:

Misono Kazuki is a college student pursuing a dream of becoming a famous novelist but unfortunately, for someone trying to pen a supernatural YA novel, he's got next to no experience with close encounters of the spiritual kind. To remedy this, at the suggestion of a friend, he heads to a supposedly haunted shrine late one moonlit evening, and while he doesn't find any ghosts, he does find something much more interesting.

That day, I died at the train station and my mind got transferred inside to a body of a girl in a fantasy world.

"Hurry up and ask me to kiss you one more time!"

The pitiful lamb, Kusakabe was forcefully brought to the home of the school's most reputably notorious delinquent, Hayasaka-senpai. Just when it seemed like he's going to become the wolf's dinner ― unexpectedly the senpai ask Kusakabe to teach him maths. In the time shared under sunsets, Kusakabe saw another side of senpai that does not seem to fit into the rumours and felt that senpai is actually very gentle...? Just when he lets down his guard, Kusakabe is suddenly pushed down and under the caresses of his senpai, he gradually writhes in pleasure?!
The love story of a seductively cute young boy's heart in blossoming spring is going to start.

From Shojo Manhwa Scans:
Eunca is a third year (high school) drama scenario wannabe. Because she takes more time going to movies, its no wonder she cuts school. When she accepts a part time job in Taeruk entertainment (with her friends support), she thought her life would be perfect. Instead, her first day on the job makes her life crazy! She never thought of having a part time job in Min JiEun's as a fiance...it just can't be happening! With only her strong personality, would she survive...and maybe fall in love?.