Futagami Sousuke, 14 years old, is a normal student, wishing to live a normal life. But everything changes the day he sees a doppelganger of himself in his house. Since then, the girl he has a crush on, Amane, will introduce him to another side of his world he had no idea about, and there won't be anymore of the dear peaceful days for Futagami.

Aikawa Ayumu is a normal high-school boy, until one day he is killed by a serial killer. The necromancer Eucliwood Hellscythe revives him--but as a zombie. As he begins serving Eu as her guard, he happens to deprive a mahou shoujo (magical girl) named Haruna of her magic power. Haruna orders Ayumu to take her place and fight against anti-mahou shoujo system, "Megalo." From Yen Press: Life—or undeath?—isn’t easy for Ayumu Aikawa. A seemingly normal high schooler, he is in fact a zombie who serves as a bodyguard to an introverted necromancer. But his already complicated existence becomes even more outlandish when he accidentally steals the powers of a magical girl, transforming into one himself—complete with frilly dress and pink chainsaw!! How’s a reanimated corpse supposed to keep his head on his shoulders with roommates like these girls around the house?

Japan: the Gambler's Paradise! The rich and beautiful Maria is well-known as a legendary gambler who will take on any challenge, no matter how unreasonable or impossible! But what happens when she meets a lowly slave who solves her riddle..? Twist after twist! So tense you'll forget to breathe! This MangaBox-exclusive five part gambling story will leave you aching for more! Prequel: Once Upon a Time

Assassins--they are humans that have exceptional skills which they use in killing people. The most dangerous among them is the Assassin of Crimson--the former leader of the Assassin guild Yuuyami, and the one who killed the country's leader, King Mars. Due to this, the country's princess has declared that whoever captures her will obtain fortune and become the princess' husband, essentially becoming the next king. Virgil is a guy who has red hair and looks like a girl. He is travelling with a performing troupe while searching for his twin brother Serge. His peculiar features seem to have matched the known characteristics of the Assassin of Crimson. The following events will lead him to discover the mystery behind the death of the king--and the identity of the Assassin of Crimson.

Kosu x Kosu is a oneshot about Isumi Seiji, a high school art student who frequently coaxes female students into becoming his models, and Takamiya Ayase, the student council president who always reprimands him. After repeatedly refusing to become Seiji’s model, Ayase decides that the only way to stop him is to disband the art club. As she attempts to do so, however, she is cursed by a third party, and the only one who can free her from the curse is none other than Seiji.

There exists a martial arts contest in Japan that is of no concern to boys. Girls who possess the Dragon Queen`s spirit gather at a special academy. The goal - fighting each other to make the soul of the Dragon Queen one once more. How? Why? By fondling their defeated opponent`s breasts, of course!

When Yuko randomly runs into her aloof classmate Arisa one day, she's delighted to get a chance to get to know her! She cheerfully accompanies her to Shibuya, where Arisa says she has an important job that only she can do. As the situation turns violent, Yuko realizes that the mysterious Arisa has a lot more secrets than she could have guessed. Is Arisa involved with the urban legend of the "Execution Girl," who punishes evildoers?

Kai was living a peaceful and secluded life with his special martial arts teacher Gankutsuo, until the day he rescued a beautiful girl, Lee Shuurei, who was tumbling down a waterfall. He has no idea what she means when she asks about a "Tenraimon", but Kai is soon drawn into her problems when her pursuers arrive. Meeting her will change the course of Kai's life!

From Dan of Population GO: Ooba Asa woke up one morning and became an invisible man. It isn't just him, but various students around school have been gaining superpowers while his little sister has been losing the same powers. Supposedly the student council president is giving out superpowers, Ooba Amime's powers, so Asa, Amime, and the grudge-filled flame girl, Daimon Yaki, form an uneasy alliance to give the mysterious student council president.

Updating

A boy with female features is chosen by his drama club member to act as a fake girlfriend for their club, so they can practice on him before they actually get themselves girlfriends. This is series that started as a one shot and after a 1 1/2 year hiatus was given its very own series.

[From ShoujoMagic]: A woman and her sexual adventures with her brother's friend.

In order to determine which hot spring is to be the top overall, all of the hot springs within the region enter an unofficial tournament. The tournament is simple battle of capturing the enemy's flag, but the battle itself goes beyond any human measure. It is customary for a female to enter these battles. Carrying their pride and their flag, their only objective is to defeat their opponent. Hence they are commonly called "Fighting Spring Princesses." Kikko, the Fighting Spring Princess of the Aizen Hot Spring Temple, is an eccentric, hot-blooded person who is going to have her debut battle. Sit back and enjoy the story of Kikko's path to becoming queen of all hotsprings! [Source: MangaHelpers]

The main protagonist is a Iga ninja named Saizou, who meets an Izumo priestess and protects her on her short journey to Sanada Yukimura. Sanada Yukimura is a powerful warlord in the Sengoku era. Sanada wants to gather 10 warriors, a party unrivaled in skill and power, to set his still secret plan into action.

The year is 2028, location in New Koshigaya. A young boy, Isurugi Neru, lives in a poor family and is forced to quit school so that he can find his own way in life. Neru on the other hand, only thinks of one thing: to take revenge on Yagami, a classmate, who's especially gifted and has humiliated Neru numerous times.

(Summary from here): Wakamatsu Masato lives with his step-sister, Miyuki, whom he does not have blood relationship with. Their father is always working oversea (in fact, he has not appeared in the manga at all...) and left the two of them living by themselves in Toukyou. Miyuki is cute, nice, sensitive and very popular among guys around Masato. Masato has a girlfriend at school whose name is Kajima Miyuki, who is pretty and gentle, the ideal dream of every high school boy. It took years for Masato and his sister to realize whom they love and care most after a lot of events. The manga is very nicely written, with excellent layout, interesting story and character developments, refreshing art style and filled with youth and emotion. It also shows the dramatic improvement of the author's skill.

It's the year 2269, and April Enus is working as a spy for the Alliance. She's known as "Venus" because of her special power: fatalities don't seem to happen when she's around. But is this power a blessing or a curse?

A young man finds and returns a lost wallet and cell phone to a beautiful young lady, thus begins the destined relationship between two strangers. Sound typical? Well then, how about making the young lady the young man’s future homeroom teacher, and give them both a twisted sense of right and wrong. And just for kicks, let’s have the young man help himself to a self proclaimed reward from the lost wallet before returning it… but of course, this scenario wouldn’t be complete unless the young lady was very unforgiving when it came to teaching one of her students a lesson on morals. (Source: Infinity Studios)

From Yen Press: The “Roman Club,” a school group interested in the occult, to which he’s practically enslaved, has become boring for one Hideo Aiba. Until a girl named Kurumi Sahana shows up and wants to join up. But Sahana is no ordinary girl… When the two are left alone in the club classroom, Kurumi makes a special “request” of Hideo… From that moment on, Hideo’s dull life gets far more…frustrating. Sundome literally means "stopping the moment before," and considering the content of the story, it refers to being stopped just before coming or ejaculating.

A new teacher finds himself a newly appointed position as a teacher at an all girls school... on an island... in the sky! How will he make do in his new surroundings? Or the residents of this island who seem like they came from another world? And what's more, how will he fare at being a teacher?

During his free time in Okinawa, Ken is suddenly forced to couple up with a girl.

Aitou & Reiko are excellent detectives in handling the criminals but also often giving their superior a lot of troubles as they like to do things their way. One day, unintentionally they were involved in a bank robbery. What are they going to do in this situation? Let's find out in this one shot story. From Baka-Updates: Detectives Aitou and Reiko are reprimanded because of their unorthodox interrogation techniques, and then they walk into a bank robbery!

This year, the student council has decided to add an exciting new contribution to the school's culture festival; an Idol performance! However, they don't actually have the money to hire any real Idols, so someone's going to have to train up an idol group from their female classmates. Hirano Harufumi is that unlucky someone. He has no interest in Idols at all, but he must put together a performance or risk expulsion from the school for his failure. Not surprisingly, most high school girls are too embarrassed and self-conscious to dance and sing in front of their classmates in a skimpy outfit. When Harufumi tries to think about who he would like to see as an Idol, his thoughts are drawn to his cute, shy, clumsy childhood friend Aizawa Momoka. Will Harufumi be able to convince her to be an Idol before it's too late?

Loser Shinjou Maita is trying to get new members for his movie research society club when he stumbles upon angelic first-year Hotohara Shiori. Life seems to be looking up for him, until a strange woman appears in his apartment, warning him that his life is in danger.