Mangas

花のあすか組! -  Hana no Asuka Gumi! -  Hana no Asuka-gumi -  The Glorious Asuka Gang!
The story of Kuraku Asuka, a tough junior high student who gets involved with the gang scene in the Kabuki Chou Ichibangai, a rough area of Tokyo. (from Lililicious)
Can't Win With You! -  High School Nights -  Kimi ni wa Katenai -  Kimi wa Katenai -  Kiminiwa Katenai -  Kiminiwa Katenai! -  きみには勝てない!
Yuuhi-kun planned to build a soccer field on the piece of mountain land that was his inheritance, but when his brother's elite Shuuiku Academy needed a new campus, Yuuhi was forced to reconsider. Now he finds himself both the landlord, and a student at the school! Needless to say, the other students are none too happy about being shipped out to the boonies, so Yuuhi – AKA “chicken-head” – has become the object of their collective ire. But there's something about the country bumpkin that has many students eyeing Yuuhi in a different way... a way that makes him very uncomfortable. Seems there's a lot more than “book-learnin’” going on at this school, and Yuuhi's about to get a whole 'nuther kind of education!
クロイツ
Harumoto Akira, a talented high school music student, descends into the violent world of Japanese speed tribes thanks to his obsession with Otoguro Yugou, the manipulative and enigmatic leader of the tribe, Red Kreuz.
ミラクルダイエッター MIYUKI -  ミラクルダイエッター・MIYUKI -  ミラクルダイエッターMIYUKI
Yukimi, a chubby junior high student, discovers a magical dumbbell that can transform her into Miyuki, a beautiful and slender young woman in a revealing costume. But she must do battle with an evil three-star chef who tempts young girls with calorie-rich treats and dubious weight loss products, and keep her identity secret from her family and schoolmates.
ななひかり -  七光 -  爱的光环 (chinese)
High school student Nanamura Hikaru has little memory of his deceased father, a famous playboy actor, until his father's suave attorney, Shimogura, contacts him with the promise of a sizable inheritance. The catch? Hikaru has to make contact with each of his eight half-brothers - the fruit of his father's philandering ways.
叫んでやるぜ!, 我的親親老爸, I Will Shout!, Shout Out Loud!
Watch as the worlds of anime voice acting and high school hockey collide! The boyishly handsome Shino is greeted at his front door one morning by the seventeen-year old son he didn’t know he had. Suddenly pushed into the position of being a father and a provider, Shino starts taking on new acting jobs, including boys’ love drama CDs, and the separation between art and life narrows significantly when his new coworkers start taking quite a bit of interest in him! As if that weren’t enough, his son Nakaya is a handful in and of himself. An aspiring hockey player with a bit of an attitude problem, Nakaya has a lot of growing up to do, and Shino is in for the long haul.
渋谷で会いましょう -  相会在涉谷 -  Let's Get Together in Shibuya (TAKAGUCHI Satosumi)
University student Sekiguchi Toshihiko's life takes a turn for the bizarre when he begins working as an accounts clerk with Galaxy Planning, a small firm that serves as a front for organized crime. His boss is the ultra-cool Aguri, a devil-may-care yakuza with a passion for gratuitous violence and endlessly harassing his favorite employee.
Atarashii Hana no Asuka-gumi -  Shin Hana no Asuka-gumi! -  The New Glorious Asuka Gang! -  The New Hana no Asuka-gumi -  The New Magnificient Asuka Gang! -  新・花のあすか組! -  新花のあすか組
From Okazu:Asuka has returned from America, eighteen years in real time, and about 3 months later manga time. And immediately weird stuff begins to happen. Strange markings are being drawn upon people, things and buildings around Tokyo. The Area Masters, the leaders of the gangs in each section of Tokyo, are hearing strange whisperings about Hibari's new favorite, and about a possible takeover of power among themselves. And in the middle of all this, Asuka strolls in, with her studied nonchalance, and hyper-mad gang fightin' skillz, and basically turns everyone on their heads.
勝負は時の・・・運だろ? -  Shoubu wa Toki no Un Daro -  Shoubu wa Toki no Un Daro?
From Possible Soup: Hokuto is a first year student at a famous athletic school... however, he doesn't happen to play any sports due an anxiety problem that he had developed. Now, after being pressured by his friend Yuri, he has become the manager of the basketball club. Strange things start to develop as he gets harassed by some of his senpais and begins to battle some demons...
優雅男子, 美しい男, Beautiful Men, Legend of Four Funky Spirits
Welcome to the future, in S.E. 156. Thirty years before our story begins, an ace space pilot by the name of M2 Rimstein was put into an experimental cold sleep until such time as he would be needed.That time is now. He is unfrozen and put in command of the Dance Mania unit of three superb pilots, though two are rookies: Stellasta von Argyll, Malloy Chihaya, and Cloud Neelsen. Accelerated training commences, and new ships and gadgets are brought out so that they will have victory over their enemy.Unfortunately, things go awry fairly soon when M2 is captured and brain-washed by a planet which sends him out to fight for the enemy. Malloy at first refuses to fight his commander, and then does so with the conviction that he can bring him home to the Great Carrier.Bringing him home may be easy, but regaining his mind? 
Spoiled Within Our World -  世の中は僕らに甘い -  双子奇情
Tsubaki Ooshima and Tsumugi Ooshima are very cool twins and gay. When they were students, they tried to have a sexual affair with Tougo Hayakawa, their classmate, but were found out. Exiled from their home by their father, now they are enjoying urban life traveling around in a camper and hunting boys...