A Spin-off of Hitman Reborn.
Aliens exist for sure. Even a child knows it. The world is protected by a group of aliens with special power. Daichi lives in such a world. He terribly got burned five years ago, but it's all cured and he now lives a peaceful life. But one day, he meets one of the aliens and his life slightly changes... He is forcibly appointed as to be an examiner of the next protector test. There are also three girls who move to his school to take the test and one of them is his childhood friend. He still doesn't know that there will be a big event, which will change his future, in the not too distant future... [From ErogeShop]
From Nakama: Yuki and Hisakuni are twin brothers. Kanata, their childhood friend, was abused by his father in his own home so is staying with Yuki, Hisakuni, and their grandmother. The three were always close, but after an accident Hisakuni loses sight in one eye. Also after the accident Yuki and Kanata become lovers. Hisakuni tries to hide his love for Kanata and watches over the two but still feels a large gap forming in between them, while Yuki’s love for Kanata begins to grow, it become too large to handle. One day, Hisakuni tries to ask Kanata for the whole story of the accident that cost him his eye, but Kanata pushes him away and runs. A truck is headed toward Kanata, and Yuki and Hisakuni both run to save him. What will be of their tangled fate ---?
Taken from OneManga: Twenty years prior to the story's beginning, an asteroid headed for Earth destroys Pluto. Due to Pluto's destruction, the asteroid, which is dubbed Thanatos, becomes temporarily stagnant in Pluto's orbit. Now, in order to avoid Earth's impending destruction, the International Solarsystem Development Agency (ISDA) works on the "D-Project", and secretly creates weapons called "Dragons" after finding a dragon egg under the ocean. However, they soon find out that the asteroid is not their only threat, as powerful, destructive dragons from Thanatos appear on Earth.
[Taken from PRISMS] This is a story about three sisters in search of their lost father, who was a famous artist. They steal his works of art from museums/galleries to make him recognize their presence in the world. The three sisters' gang is called Cat's Eye, and so is the coffee shop they own. This coffee shop is located right in front of the police-headquarters. Hitomi, the middle sister, is betrothed to the police inspector Toshio.
From AQUA Scans: Marie is a shy college student and also a doll maker. Then one day, she is trapped in a gothic mansion by a mysterious young man calling himself "Kahrel." Kahrel demands that she "Creates the "people" that make up the world" for him if she wants to leave. The terrified Marie then has the dolls she's made in past come to life, and are bearing down on her! Gothic Doll Fantasy!!
After Mitsuhashi’s family moves into a new neighborhood, he decides to use the opportunity to become a delinquent. Upon meeting Itou he finds out that he wasn’t the only one who had this idea. Making friends and foes along the way will these two take over their school or just end up as wannabes? wo boys, Mitsuhashi Takashi and Itou Shinji, meet each other at a salon. It turns out both boys are transferring to a new school and decide to take the opportunity to reinvent themselves. No longer will they be run of the mill high school students, they will become the biggest delinquents Japan has ever seen!
When Chinatsu joined the student council, she found it wasn't nearly as cool as she had expected. The president just slept all the time, and the vice president just did paperwork. There was no fighting evil, no sex appeal... just normal school stuff. It's up to Chinatsu to liven things up!
In the Shibuyaku Maruyamachou series: Volume 1 - Shibuyaku Maruyamachou - Shibuya District, Maruyama Neighborhood: After School Itoi is being picked on by her classmates, but doesn't want to admit it to herself. She becomes closer to Ariyoshi when they are paired together to make costumes for a party and Ariyoshi takes her shopping in Shibuya. Will Ariyoshi be able to help her admit what's going on and come to terms with it? And is there something more between them than just friendship? A two-part story in a compilation volume by Okazaki Mari in which all the stories feature the Shibuya district. - Lililicious Volume 2 - Sakura Volume 3 - Rounin Gorou Volume 4 - Hyakka Ryouran - Wasurena Kusa - Adabana - Matsuri Ichiya
From Aerandria Scans: Natsumi Touma is sixteen years old. She began to work part-time at a coffee shop during the summer vacation when she was a first-year student of high school. However, the shop is a dubious place where Natsumi can see those who cannot be seen. Her inspiration gets stronger day by day at this spiritual place. There appears a very handsome savior.
Kawamura Hideo, a typical ordinary guy with no job, he came to Tokyo searching for jobs, he sent a total 34 job applications to only failed at the first hurdle (all of the companies didn't even ask him to attend an interview). Feeling rejected, he became a hardcore hikikomori and shut the world around him, his parents also won't send him money since then. When he starved to death without any money, lost hope and would decide to go just die he found a computer on the street (containing Will.CO21 virus) and took it home. He found a way to participate in a martial arts tournament "Holy Devil Cup" from that computer. Where the winner could get the power to rule the world, martial artists, soldiers, vampires, Majin - all 3024 participants gather there. Now what Hideo would do to win this mad tournament...
China 2A.D.: the corrupting Han Dynasty has thrown the entire country into chaos. Peasants revolt against the government. Into such an age, the ruthless and infamous hero, Cao Cao Mengde is born. Destroying old customs and values, he tries to unite China, with a band of promising and intellectual followers, handpicked for their individual talents and potential. Generally thought a villain, Cao Cao Mengde is portrayed as a hero in this story, which focuses on what kind of person he actually was. There are two other protagonists: Liu Bei Xuande and Sun Quan Zhongmou. Liu is a man of high morals and infinite potential. His servant, Zhuge Kongming is a mysterious man, who helps Liu to become a king who is loved by millions. Sun is the third descendant of the Sun family. A young and immature king also comes into the picture, creating more chaos. This is a Tale of the Three Kingdoms ("Sanguozhi") in which these three men rage war throughout China.