A series of short stories centering on Sugekoma, a high school prodigy with severe behavioural problems, and Miss Matsuzawa, the teacher who he ties up all the time. It's a big send-up of S/M cliches, H manga, SF, and the otaku mentality.

There are minor subplots concerning other students - e.g. Junko Fujieda, who can't stand perverts, they make her violent; and Murata, a masochist who's infatuated with her.

Nine is the number of the best striker in soccer. Given the number 9 in the Megumi High soccer team, Fujiyama Kazuya is a striker with a parallel belief that a draw in a game has no meaning. To him, if you don't win, then there's no sense in playing at all. Despite that kind of mentality, their team has never won a game as of yet. How far forward will the boy who has never been victorious--but even so, is determined to win--reach when a mysterious man called Kuniyoshi Utagawa, who has a liking for the number nine, makes his appearance?

Goal Den Age is a manga that was published in serial SPECIAL soccer cartoon.

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From ryColaa:

Akiyama first came across seeing Hana in the corner of the television screen when some nameless female kickboxer was being interviewed. Since then, he was smitten and went to all three of her matches, but then all of a sudden, she stopped competing and he became at a loss as to what to do. But then he runs into her by accident on the street on his way home from work and discovers that this woman, who wants to become the world champion, is far more complicated than he could have ever imagined…

Otoji is searching for his older brother in seedy, urban Yokosuka. During this search he meets up with Joe, a fashionable prostitute who eventually joins him with his search. Along the way Joe aquaints him with the wonders of sex and prostitution, and the flexibility of being both seme and uke! But while Otoji deals with the search he and Joe face the darker side of their lifestyle.

Takahata Shun's day at high school begins just as normal and boring as ever, but it doesn't end that way. After his teacher's head explodes, he and his classmates find themselves forced to play children's games, such as Daruma ga Koronda (a game like Red Light/Green Light), with deadly stakes. With no idea who is behind this mysterious deadly game session, and no way of knowing when it will finally end, the only thing Shun and other students can do is keep trying to win...

Bathed in fame, authority, assets... The noble family of Kyoto Haginokouji. Seiya-sama the next head of the family, has just reached the age of 16 and still goes to high school. With anarchistic family customs, he can't stand having to keep his life a secret! His sole ally? The handsome level-headed Takakura Yoshiki. He plays the role as the Haginokouji family's young and skillful private secretary, but when it comes to his young master's childish antics, he melts on the spot...! The series is incomplete because Tohjoh Asami passed away due to illness.

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When forcibly injected with the DNA of Musashi—the legendary swordsman—by the secret organization Akai Umi (Red Sea), Hagane Yakushimaru becomes a master fencer with supernatural powers. She sets off to rescue her parents, who have been abducted by Akai Umi, making friends and foes with supernatural beings (parasite projects) who have also been injected with the DNA of other historical figures.

What is Hagane's secret? Why is she the only successful female DNA injection recipient? What exactly is the project called the "Revelations of the New Millennium"? A veteran artist depicts a futuristic battle manga on a grand scale.

Confessing your feelings the girl you love is never easy. Even more so if she's one of the school's two most admired idols. Kobayakawa, now a high-school student, has been going to the same class as his crush, Kawai Yui, since elementary school. When he finally decides to call her out, he's so nervous that he ends up confessing to be in love with the school's other beauty, Kawashima Asuka,...?!

A collection of historical one-shots.

1) Romance hidden in the leaves
A frivolous samurai's apprentice find his way into the heart of his prim & tenacious ronin sensei.

2) The road through dreams
A 16 years old nobleman is in love in his childhood friend, a servant in his family house, but the latter can't return his feeling because of their class differences.

3) Sign of a world's love
Before commodore Calbraith Left Japan he picked the most beautiful flower of the orient...

4) Odoru Awa ni Tama no Hada
Young sensei from Tokyo is appointed as teacher in a remote fishing village's school. His young but tough students giving him a hard time, especially the bossy son of the head of the village.

5) Gentle Darkness
Since his family moved recently to a western mansion a spoiled rich youngster had to live in a western life style that he hate. While wandering in his new family's estate he came across a strange house but is seems that the person who lived there is even stranger...

6) Shirayuki no Sono Mune ni - Romance hidden in the leaves (1) Omake (deals mainly in the second couple in the story).

1. Hada no Ue no Renai Jijou (Above Skin Love Circumstances)
Yamaji is a middle-aged, middle school art teacher who is dating Tsukishima, a younger man. Tsukishima possesses a perfect body type, which Yamaji loves to sketch. Reflecting on that perfection, Yamaji realizes his own body is less than perfect - flabby! - and he needs to improve it before Tsukishima rejects him because of it.

2. Zaiaku wa Hada no Ue ni (Sin Is Above Skin Level)
Tsukishima, a regular businessman, has begun a blissful life living with his lover Yamaji. But though things are happy on the surface, Tsukishima can't shake the feeling that Yamaji only likes his body...

3. Hada no Ue ni Furu Hana (The Flowers Touch)
Tsukishima and Yamaji admire the cherry blossoms together. While looking at the beautiful trees, Tsukishima thinks that Yamaji is far more beautiful. A springtime continuation with our lovely couple.

4. Renai Tsuu (Heartache)
When stoic Mizusawa, a janitor, saves businessman Aoki from falling down some stairs, he gets a friend for life! Aoki is always tracking him down at lunch time just so they can eat together. But Mizusawa isn't sure how he feels about Aoki...

5. Renai Tsuu - Akka

6. Yurusareta Uta (Permitted Song)
Humans keep monsters as slaves for fighting and protection, but there is one, Zai who refuses to fight. Zai is special since he can use magic by creating spells with his songs, but he refuses to sing too... will he, for his master?

7. Omake
Three pages about the characters from Yurusareta Uta.

Young President Tsugumi, who must worry about business problems, can't forget the stranger he unintentionally spent one night with. However, when they meet again, the guy turns out to be the new Manager of the Planning Department, Mayuzumi, who was scouted for the reconstruction of the company. "So it was for the company's sake that you let me embrace you so easily?" Mayuzumi puts on the mask of a capable subordinate during the day, then when night comes, embraces Tsugumi. An adult superior-supplanting LOVE.

From Attractive Fascinante: Kijimuna, an Okinawan fairy who lives in a banyan tree. About the same height as a young kid, with reddish skin and hair. They will come down from the tree and do naughty things to humans at night. You’ll get happiness if you nurture it and the fairy will never betray you. Tomohisa bought a potted plant that comes with such a resident, Kite. When feelings gradually develop between them, Tomohisa’s senpai and ex-lover, Kazunori, wants to reconcile with Tomohisa. Will Kite try to stop it from happening or will he let Tomohisa choose his own happiness?

This is my duty as a butler...

Son of the marquis, Nicholas has strawberry-red hair, honey-yellow eyes, and syrupy smooth skin. At his side at all times is Eim, his butler. Though Nicholas has already grown up, Eim still loyally bathes his master. One night, Eim walks in on Nicholas fantasizing about his butler’s true feelings...

Includes the love story of an idling instructor and a young knight-in-training!

Summary refers to the Libre Shuppan re-print, 2008:

1-6) Te wo Tsunaide, Sora wo
Haruya, a magazine article writer, is constantly frustrating his editors with his lack of inspiration. His calm, quiet life is spent in a house away from the city. However, upon meeting a shy boy undressing on the beach, their lives become linked. An unusual relationship follows that will ultimately be beneficial for the both of them.

7-9) Kiss me, Daddy/ Make Me Happy/ Walkin' on the Moon
Shiba owns a small software firm. Naomi, who works there part-time as he studies at the university, is comfortable with his homosexuality. So, despite Shiba's being 36 years old, Naomi can't help but be attracted to his boss! But, does Shiba feel the same way?
(Also included in Make Me Happy)

10) Fade
Morikawa has arrived in his professional career, however his vindictive ex decides to spoil it by revealing that Morikawa is gay. Luckly, Higa, a coworker, is there to help Morikawa. But does Higa have more motives beyond a business relationship?

11) Closed
Takashi wants Yuu, his classmate from University, to love him. Unfortunately, the only way Takashi can think to win Yuu's heart is through drugging and raping him. Will Stockholm syndrom work in his favor or will Yuu leave Takashi for good?

12) Echo Night
Akito has an interesting night with his client Shirou. After multiple rounds of steamy sex Shirou promises to take Akito with him as part of their role play. However, was he only joking?

13) Secret
Kei and Subaru visit Maki and Haruya again. Maki is concerned about Haruya and Kei's former relationship and Subaru tries to help him feel better.

Being his first series, What a Wonderful World remains Asano's most representative and successful work to date.

Composed of vignettes from the daily lives of a group of people inhabiting an ordinary neighborhood somewhere in Tokyo, the series is actually a comment about modern life itself and how we can survive in it despite all its rigors.

Amusing, melancholic, funny, strange, thought-provoking - Asano effortlessly shifts from one mood to another, creating stories and characters that are profoundly human and thus always involving. It's a shame that not everyone will find the subjects the author describes equally appealing since some of them are distinctly Japanese. But overall, it's a great collection that any discerning manga reader should check out.

Due to living with her 3 brothers and father for so long, 2nd year Mizumori Hidarishita has come to hate all guys! Against all odds, she encounters Koizumi Ikurou, an avid girl-hater because of his troublesome sister. Tired of being pursued by the opposite gender, they both seek refuge in holding onto their beliefs, but what happens when Mizumori's dream world is torn apart?

Persistent mediocrity hasn't dissuaded Fukutsu Toshi, captain of a lame high school baseball team, from his love of the game. But when the principal, dissatisfied with their winless performances, threatens to take away their playing field, Toshis is forced into action to turn things around with all out efforts. But facing him at every turn is endless adversity. Nothing is ever easy for him, but luckily, Toshi has the determination to beat it all. -Bakaupdates