So you're a high-school student and love your teacher. Why? Well, big boobs, nice ass, etc. However, your “sister” loves you. Almost seems like a story with no end. Problems arise as expected and such, but what if your teacher that you love and your sister’s soul interchanged and switched bodies. Which one will you love now?

Anno Domini, The Final Days of The Year 5001. Join the Kanto Ijigen Family on their bodacious adventure going where no Yakuza has gone before... SPACE!

A short story collection of Jirô Matsumoto's, things get nasty, and wet. Seriously, in each of those stories there's enough body fluid sloshing about to fill a swimming pool.

The manga adaptation of the otome game. The story centers around the six sadistic Sakamaki vampire brothers and a girl, Komori Yui, who goes to live with them.Yui Komori is a positive-thinking girl who nevertheless is troubled by seeing spirits and experiencing poltergeist phenomena. In her second year in high school, she transfers to a new school — a night school for entertainers and celebrities — due to her father's work. There are rumors that there are vampires among the student body, and Yui ends up living with the Sakamaki brothers.> Diabolik Lovers Prequel( http://www.batoto.net/comic/_/comics/diabolik-lovers-prequel-r10050 )

Naoya Hanamura, who works at a major manufacturer, hears that his crush and senior colleague, Sai, is engaged! Just when he's wallowing in heartbreak, Naoya's client, esteemed designer Shuji Takase, appears before him, enamored by Naoya's talent. One thing leads to another, and Shuji steals both Naoya's heart and his body. Naoya is then accepted into Shuji's design studio, where he finds himself becoming attracted to the ill-mannered, bossy and egotistical Shuji. But rumor has it his boss isn't the type to fall in love, and he can't seem to close the distance between them......

from Renta!

The manga adaptation based the otome game Diabolik Lovers More Blood, the first fan disc in the Diabolik Lovers series. This anthology consists of a series of oneshots focused on the Sakamaki brothers.

In this school, legend has it that there is a "Love Expert" who can help girls fulfill any of their wishes. Follow four different girls on their journey of transformation and love, and watch them overcome their fears and insecurities with the help of their Love Experts. -- moonsong

Shingo works as a medical rep. for a pharmaceutical company. He's introduced by his customer to anesthesiologist Reiji, who works for a large hospital. When they first meet, Reiji has an ice-cold attitude and tells Shingo to get lost. He's a tough customer who's not willing to open up at all. Shingo's efforts pay off, though, as he gets invited to go with Reiji to a conference in the countryside! That night, Shingo finds a chance to get closer to Reiji. One hotel room, one bed, a crumpled robe and an intense expression. "He's totally making a move here...... right?" Not only is he with a man, but it's that cold, straight-laced anesthesiologist... "Should we have sex? Just what the heck's the right answer!!!!?" A hot medical rep. and a handsome anesthesiologist, embroiled in an adult affair!

from Renta!

Akihito's can hide nothing from his lover, Kaoru.
That's because Kaoru's nose can decode anything, with the slightest smell he knows what you ate for breakfast yesterday and where, who you've met with, or if anything is wrong with your body.
Akihito met with some guy that day, and Kaoru smelling something weird with him, forbade Akihito ever to see the guy again.
Why would Kaoru do such thing?

From ShoujoMagic:

A collection of short stories.

1) DJ "COOL"
Chiaki never expected to fall in love with the number one night club DJ!

2) Pianist "Sou"
Mizue is charmed by her enigmatic music professor.

3) Guitarist "Demi"
Hinano's boyfriend just dumped her because she's not his type! She's too cute, and he wants a sexy girl... but it would seem Hinano's mailman disagrees. By day, he hand delivers her mail, and by night he lets down his bleached blonde hair, and... (!!!)--but guys like that aren't Hinano's type!

4) Princess Hungry
Aoi, age 17, has a problem--an abnormal appetite! It's getting hard to keep it a secret from her classmates, but she can't let them know. She still remembers when she started dating her crush Kousaka... and then when he caught her pigging out after they'd parted one night, he never spoke to her again. But now Aoi is going on a trip with some classmates and their friends... and Kousaka is with them!? Is he mad at Aoi? Will he tell everyone her secret?

Haruka is suddenly dating the popular Wataru. She does love him, but she is not a honest person. Can she tell Wataru how she really feels?

Abe Yuuji 28 years old is part-time worker. He is able to dreams but not normal ones, in his dreams he can couples having sex outdoor in his neighborhood. He began to go peeping on them for his own pleasure, one day he meets Irie Miki, a beautiful and violent policewoman who seems to be getting in the way of “his daily pleasure life” and there begins their adventure…

From Midnight Scans: Her childhood friend, Sou, returns from America for the first time in 5 years. Ai is really happy to see that he has become very angelic looking in the time that they've been apart. However, one day he says, "I will definitely make Ai mine", and forcibly kisses her! To get treated like that by someone three years younger than her and who she's always treated as a younger brother takes Ai by surprise. It would definitely make Ai's heart skip a beat, wouldn't it?!

From Chibi Manga:

This feeling is not friendship.
I feel unsafe...
Because I love you so much...
I want to touch you deeply...

Collection of short stories:

• Kimi wo Dare nimo Watasanai
• Setsuna no Koi
• Amai Jigoku - Setsuna Jikan (sweet hell)
• Piece

1) Kimi ni Furetara
After school ended, in the nurse's office. I found out about Senpai's "secret." Don't make that pained face. For now, forget about that girl and please indulge in me.

2) Monopolize
Hana's friend Shinobu was a nerdy kid who developed into a super cool guy, but he doesn't know it! Hana keeps him in glasses so no one will notice how handsome he is. Hana is torn between her guilt and her possessive nature.

3) Masshiro Valentine
When Misa's boyfriend breaks up with her to date her friend, she's crushed. Handsome stranger Yuki tells her, "I know of you, because I love you."

4) Love Costume
Ichigo loves cos-play and her boyfriend, Hayato. But he only seems passionate when she's in costume...

5) I Will Comfort You
Nanami loves Ichijyou. But Ichijyou's already has a girlfriend. Then he breaks up with her and turns to Nanami...

From Midnight Scans:

1-3. Kareshi Toshishitakei
Her childhood friend, Sou, returns from America for the first time in five years. Ai is really happy to see that he has become very angelic looking in the time that they've been apart. However, one day he says, "I will definitely make Ai mine", and forcibly kisses her! To get treated like that by someone three years younger than her and who she's always treated as a younger brother takes Ai by surprise. It would definitely make Ai's heart skip a beat, wouldn't it?!

4. Gyakuten Valentine

5. Kimi ga Hajimete

Knights is a shounen manga tale about squire Mistletien, called 'Mist' for short. Taking place in a medieval world in which the church and her representatives are burning people en masse on suspicion of witchcraft, Mist and his organization are taking a stand against the church and the 'Saints' who are perpetuating the witch hunts. Mist is feared and hated by the village-folk because of his appearence, wearing a mask to disguise himself and going by the moniker 'The Black Knight.' He travels with Euphemia, a young girl who is as expert with mixing potions and poisons as Mist is with a sword, and together they rescue those who are to be executed on suspicion of witchcraft.

From ShoujoMagic:
It happened in the blink of an eye. Rikka's world turned upside down when her school field trip bus flipped and plummeted into a lake. Everyone inside that bus drowned... except for Rikka, but she wasn't saved by anything as simple as luck. When she was released from the hospital, Rikka was then attacked repeatedly in a series of bizarre incidents all involving water... and a sadistic aquatic beauty whose name is -- Rikka!? What does our heroine have that the sadistic Rikka wants back? What was it that saved her from drowning, and who gave it to her and why...?

From Jshoujo Scans:
Mine's first love ended when Setsu, her old playmate, transferred to another school. Before he went away, he left her a message that Mine should not have her hair cut. Four years have passed since then. Setsu came back, but he has changed a great deal. This is a collection of girls' pure love stories.

1. Kiss no Tochuu
2. Marshmellow Baby
3. Sex? Friends
4. Ohimesama no Kagai Jugyou
5. Sora no Shizuku