[From DMP]: Toru is a shy and quiet student who has developed a special crush on his close friend Ryoji, the most popular member of the high school swim team. In front of Ryoji, Toru hides his feelings and acts as if he is just one of Ryoji's good friends, but in a moment out of the blue his world will be turned upside down as Ryoji will confess a secret desire for Toru. Dazzled, Toru can barely hide his excitement for Ryoji and quickly accepts his offer. As time passes, Toru's happiness begins to fade knowing that his affair with Ryoji was just a fling based out of Ryoji's sexual curiosity. Toru, adamant about his feelings for Ryoji, confides in another one of his close friend, Kashiwazaki, about his dilemma. The two set off to devise a plan to test Ryoji's true intentions by faking a romantic relationship. Soon after, a frustrated and jealous Ryoji attempts to pry Toru out of the arms of Kashiwazaki. Is it just as they planned? Yeah! That is of course until Toru realizes Kashiwazaki wasn't really faking! How could he not have seen it coming? Both Toru and Ryoji have hidden their feelings from each other in the past, but now they have discovered that they were not the only ones. Will Toru and Ryoji be reunited or will their true feelings for each other go unfulfilled?

A collection of three stories of love and the supernatural:

I. Desert Storm. It's four years after the Chechnya revolt against Russian rule. Eimi finds a mysterious boy who speaks Japanese, just like her father. Because he can't recall who he is she calls him "Yuuji." And Yuuji's strange powers tell Eimi her first crush is still alive...
*Related to Silent Eye

II. The Garden of Wild Roses. Garden designer Shindo Chika is surrounded by mystery. One by one people she knows are injured or suddenly die. The only clue she has is a boy with a scarred face--who she fears is a shinigami.
*Related to Towa kamo shirenai

III. Sunset Encounter. Ryuugi dreams each year on his birthday of a girl named Fumika who he loved as a boy name Sou, and another boy named Keishi, who kills him. But when the people from his dreams keep appearing and he starts dreaming events that take place while he dreams, then he begins to wonder what exactly is happening.

DeroDero is the story of a juvenile delinquent, Hino Mimio, who happens to also be a psychic. His ability to communicate with the spiritual world as well as his demeanors caused him to constantly interact with supernatural beings -- usually ending up with Mimio beating the crap out of the monster or spirit.

From xkazemg:

Ootome Hime’s father was a jockey who dreamed of winning the Japanese Derby. One year, when Hime went to watch him race in the Derby, he died in a horrible racing accident. The man responsible retired in guilt from being a jockey.

10 years later, Hime is in high school, and she has heard that Arakawa Jin, the son of the man who killed her father, is debuting in the Derby as a jockey. She went to see him race, and was outraged to see him win! Now Hime has decided to quit high school and go to a special school for jockeys, in hopes of being able to beat Jin in a race one day. She has met a new friend and aspiring jockey along the way, a boy called Tadano Ryouhei, but she can’t let him stand in the way of her revenge!

Kenichi is a high school guy who wakes up in a magical land. Together with a fairy and a swordsman, he must recover two magical items to save the magical world as well as his own.

note: The manga has been reprinted in a normal tankoubon size with only Akiyama Tamayo noted as author.

*manga is based on a true story and the true story was done in 2ch*

It's about an Otaku guy who fell in love with this beautiful lady and tries his best to get that girl with a lot of help from 2channelers (people who goes/posts on 2ch).

This story has become very famous in Japan and I believe they now have novels, several series of Manga (both Shoujo and Shounen), movie, drama, play, etc, etc.

This total loser, Tatsuhito, causes the legendary gang leader of the Grand Cross, Shou, to be hospitalized. He must take his place for the duration of time it takes for Shou to recover or else the Grand Cross would fall into chaos.

A collection of short, bittersweet love stories, including several incestuous ones:

1) Until the Ice Melts and Turns to Blood.
The Karaoke staff call her "the lonely girl." She rents a room all night and won't go home. Why? And what can Nogami say to help her?

2) Suicide Note.
Two charming girls, Michi and Rina, decide to end their lives this day. As the day ends we slowly discover why: both the horror--and the hope.

3) White.
It happened once, years ago... Now it's all Minako can think about. She yearns to do it again. But how does her brother feel...?

4) Yellow.
She just wants her brother to look at her--really look at her as a girl, not just a sister.

5) Blue.
They were finally reunited after their parents divorced. She can't resist her feelings for him anymore. But will she lose everything for one night of bliss?

6) Prohibition.
A walk together. A stolen kiss. Tears.

7) Moon River.
A young man studies and studies while being afraid of his own problems of failing. Until he meets a girl with a specific problem of her own by the river...

8) Bitter Cakes.
Miho meets with her friend Natsuki, who is blind. Natsuki trusts her other senses--and herself. But Miho trusts no one--yet perhaps trusts her eyes a little too much...

9) Love Horizon.
A girl sees her high school crush by chance, but something is very different about him.

10) The Day It Rained.
A short political piece regarding a young man, and a doll.

11) No Count.
A young girl finds out that her first kiss was with her oniichan.

Makoto Niwa moves to live in the city and meets his first cousin Erio Touwa at the house of his aunt Meme Touwa. Erio is no longer enrolled on the register of the school and is constantly wrapped in a futon. Erio claims that she is an extraterrestrial life.

From Hochuuami:

Four-eyed Nobita is ignored by everyone at school or they highly suspect he's an anime dork. Little does he know, sexy Ritsu has been staring at him from afar. What happens when the glasses come off and what's next... the shirts?

Note: The story is unfinished because the mangaka passed away.

Republic of Biscotti faces a predicament by the invasion of Galette Leo Knights. In order to save the country, Princess Milchore summons a "hero" from the outer world. Shinku, a junior high school boy living in the Earth, is chosen as the hero.

*This series contain side stories to the anime series that take place before the series, in between some episodes and at the end.*

Du Ming, young anesthetist in a big Chinese hospital, is haunted by the memory of Zhang Qian: a young lady coming from the same school as him , who bewitched him by the sulphurous beauty and the aura of strangeness she emits. After graduating, Du Ming stayed in touch with Zhang Qian, who writes him. Now a terrible piece of news arises: the young lady is said to have committed suicide. From Manga-News.

DOCTOR! is a manga by Ippongi Bang staring the mysterious young Doctor (Yeah, that's his name) in a fantasy world taking place in Latin America.The art of surgery has been lost, and illnesses are caused by demons and forces of Darkness. Doctor travels with this little blob named Liquido Medio and they travel around from place to place curing and helping people along the way.

Shingo and Kippei are making out in a secret place at school. Not secret enough, however, because the people who run the student council find them there. Homosexual behaviour is strictly frowned upon, and leads to physical punishment. (No, not the kind you're thinking, unfortunately.) The leader Sawatou, nicknamed "Doberman", tall, dark, handsome, and with a cape, impresses Kippei so much that he instantly falls in love. But with Sawatou despising homosexuals, surely that love is doomed to failure?

Korean manhwa based on a novel.

The heroine reports a hit and run case which disrupts the family of Hui Won. He constantly abuses her while falling in love with her along the way.

However, she has a boyfriend - Eun Gyu - who is the singer of an ongoing band.

Note: the female lead is a strong girl who speaks her mind and knows self defense.

*In full color, not black & white*

Sun Jong is a girl who doesn't like to be near others, and wears a mask on her face. Her grandma decides to take in a good looking boy who has the mission to become friends with her. Can she take off her mask?

Shiori's dad remarries and she couldn't be happier. Not only has she gained a new mom, but a hot, older, yet sadistic brother as well?! Note: The manga was previously named as Ie no Naka no S na Koto.

Sequel to Divine Melody. Caisheng, the half demon fox god who can change gender at will, wanders the Earth looking for her lost lover's reincarnation, Wei Tzequi. Wei Tzequi, a former divine being, was banished from the heavens for breaking the rules, but Caisheng refuses to give up hope she will meet him again.

But finding Wei Tzequi is only the start of Caisheng's troubles. Other beings, both demons and gods alike, want her for their own reasons. Some see Caisheng as the salvation for their own race, while others want to kill her for their own nefarious purposes. Even a fox-god from the heavens, Yuer, finds himself intensely curious with Caisheng, and decides he will take her back to the heavens in order to marry her. In order to survive, Caisheng must muster what allies she can so she can continue to wander - and find the one person she has spent so many years seaching for.

From Transcendence:

This is a tale full of wonderful Ancient Chinese legends. A group of beautiful female fox demons lived at the base of a mystical mountain. Among these foxes is the very special Caisheng, a little fox girl with the ability to change into a male fox demon when she matures and allow the continuation of her species. One day, she secretly went into a nearby human village and befriended a boy named Duoxi and a girl named Xiaoque, and when the little fox child is attacked by a dog, the two human children saved her! Now the two children are marked, and will remain so -- even in their reincarnated lives -- until Caisheng repays her debt to them...

Two hundred years later, Caisheng not only becomes the most powerful fox demon but also has mastered the art of gender transformation. She begins her search for her saviors' reincarnations: the boy now known as Yunshi, and the girl as Ping'er. Not knowing Caisheng's true identity, Yunshi falls in love with the female Caisheng, and Ping'er with the male Caisheng! But Yunshi is a priest whose duty is to destroy all of the demons... what will he do when he discovers Caisheng's true nature? And whom will Caisheng choose in the end?

(Clarifying note: Very low smut content)

The Vampire Bund, a peaceful island nation of vampires off the coast of Tokyo, ruled by Princess Mina Tepes, has seen its share of conflict and turmoil. Yet there are times of relative tranquility when the Bund is a popular tourist destination.
When two teenage tourists visit the Bund and are unexpectedly turned into vampires, they appeal to Mina and her loyal lycanthrope bodyguard, Akira, for help. Their only hope is to find a cure to reverse their vampirism within forty eight hours, or they will be stuck as vampires forever.
Unfortunately for them, their race against time turns into a game of cat and mouse that takes them across the entire Bund in pursuit of the one person who holds the key to their salvation.