Aoshima Hitoshi is a second-year student in high school, who wishes he had a girlfriend. One day he wakes up for an unknown reason 10 years in the future, and he is married to the prettiest girl in school, Wagatsuma Ai! How has their relationship grown from mere acquaintances to husband and wife!?

Taken from Anime News Network:

Changing schools is something Yuuchi is accustomed to, due to his parent's profession, and with their recent venture to Africa, he is returning to his aunt's home after 7 years. The time that has passed since his last visit has faded his memories of the people he knew, and the ties that bonded them to him, including his cousin Nayuki. Slowly those people, coincidently all being girls, find their way back to him. However, time has passed and things have happened in their own lives that sets the tone for the series. Secrets that are coming to surface, and memories that are returning to not only Yuuichi, but to those surrounding him. A very heartwarming tale that touches upon a spectrum of emotions, mystery, and the supernatural.

Itou Seita was supposed to be an ordinary college student, but suddenly he found himself in an anime-like situation when 5 girls -- alien, little sister, childhood friend, tsundere, and fiance -- showed up in his apartment and decided to start living with him. Is this your typical harem or is there something else going on behind the scenes?
A formerly popular but now disgraced and unemployed seiyuu/idol Hira**** Aya gets a generous proposal to voice the lead part, magical girl Killemall, in a mysterious animation company production. But is that company harboring certain secrets?
Finally, how do these two stories connect together to lead to a perfect harem ending?

Also, contains 5 extra short stories.

From MangaHelpers:

Sagara Masamune is a manga author who isn't very successful, and it's looking like it's time to end his battle manga. To go for an unexpected ending, he plans to kill off the main heroine, Nina, in a dramatic way. As he works on his manga, he is mysteriously sucked into the pages. Now he's trapped in the world of his own creation, with his protagonists, exorcists Haru and Nina. He doesn't really get what's happening, but he thinks concluding the manga, which involves orchestrating Nina's death, might get him back home. [tethysdust]

From Easy Going Scans:

Choi Ha Ram, an average high schooler decides to buy a necklace one day without knowing that this item is going to turn her life upside down! That necklace has a connection with the ghost of Yu Ga On and whoever wears it is able to see him.
Yu Ga On has no intentions to harm the girl on the contrary actually but his actions always seem to get Choi Ha Ram in trouble. As if this was not enough a new neighbour comes along to add more excitement in her life!

After a long illness, Naki returns to school and finds a ghost in her locker who asks her to become a Rock-n-Roller.

Ex-yakuza hitman Yousuke dies... And is promptly scouted as an angel! Will he manage to accomplish his earthly duties, or will he simply drive his trainer, Zerachiel, crazy?

Note: The original oneshot was titled Scrap Heaven, but after being granted serialisation the series name has been changed to Gokurakuchou Dead End.

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 it won't be anymore the dear peaceful days for Futagami.

From: Easy Going Scans

500 years before the story of Saiyuki, a heretic child with golden eyes is brought into Heaven. He is given into the reluctant care of a minor deity named Konzen, the nephew of the Merciful Goddess Kanzeon Bosatsu. Konzen eventually gives the child the name "Goku". Goku becomes friends with two other minor gods, Marshal Tenpou and General Kenren of the Western Army of Heaven. He also meets a strange little boy who seems to be his own age, the War Prince Nataku. Although Goku is happy in his new home, Heaven is not kind to heretics. There are those who would use Nataku and Goku as tools in an attempt to seize the throne of Heaven, and Konzen, Tenpou, and Kenren may not be able to save them.

From Viz:
Phoenix is made up 12 complex stories linked by the presence of the mythical bird, an immortal guardian of the universal life force. Read in order, the separate stories jump across time, alternating between a distant future and a distant past, converging on the present, with characters from one story being reincarnated in another. The 12 stories--over 3000 pages.

Dawn:
The first volume, originally serialized in 1967. This story takes place in 240-270 AD, in the era of Queen Himiko of the Yamataikoku. Using her army, led by feudal general Sarutahiko, to invade Japan, she seeks the Phoenix and eternal youth.

Future:
The second volume, originally serialized in 1967-68. In Phoenix's chronology, this is the final story; it takes place near the end of mankind. In 3404 AD, the world has become super-modernized, but humanity has reached its peak and shows decline. A young man named Masato Yamanobe is living with his girlfriend, Tamami, a shapeshifting alien. Pursued by Masato's boss, Rock, they eventually take shelter at the isolated base of mad scientist Dr. Saruta, who attempts to preserve life on Earth with the assistance of his robot, Robita. Eventually, nuclear war breaks out.

Yamato:
The third volume, originally serialized in 1968-69. This story takes place in 320-350 AD (Kofun period), and is based on the Yamato-takeru-no-mikoto legend. The decadent king of Yamato is trying to have his own version of Japan's history written. Meanwhile, a "barbarian" tribe, the Kumaso, is writing an unbiased history. The king of Yamato sends his youngest son, Oguna, to murder the barbarian chief, Takeru. On his journey, Oguna encounters the Phoenix.

Universe:
The fourth volume, originally serialized in 1969; also known as Space. The story takes place in 2577 AD, where four astronauts must escape their ruined spaceship in escape pods. The survivors eventually crash into a mysterious planet. Among them is Saruta, who contends with Makimura for the heart of their female companion, Nana. On this strange planet, they eventually meet the Phoenix.

Hō-ō:
The fifth volume, originally serialized in 1969-1970. The story occurs in 720-752 AD. (the period in which the Daibutsu of Todaiji was built), during the Nara period. One-eyed and one-armed young man Gao, an ancestor of Saruta, turns into a murderous bandit when he is rejected by his village. He attacks a sculptor, Akanemaru, and the two men's paths diverge, but their fates remain linked. Akanemaru becomes obsessed with the Phoenix to the point that he loses sight of his original dreams, while Gao eventually finds a state of grace despite his continuing hardships. Ho-ō is widely considered the masterpiece of the Phoenix series. This became the basis of a Famicom game, in which Gao is the playable character.

Resurrection:
The sixth volume, originally serialized in 1970-1971. The story takes place in 2482-3344 AD. In an age of robotics, technology and science, young Leon dies in a car accident. He is returned to life by scientific surgery, but his now mostly-artificial brain makes him see living things -- including humans -- as distorted clay figures, while he sees machines and robots as beauties. Leon falls in love with a worker robot, Chihiro, whom he sees as a beautiful girl, and will fight for this forbidden love. He will also find out the secret behind his accident. A side plot features the robot Robita, who previously appeared in Future.

Robe of Feathers:
Serialized in COM, 1971. Published in English by Viz as an appendix to the second volume of Civil War (Turbulent Times). Based on the story of the Hagoromo.

Nostalgia:
Published in COM, 1971; continued in Manga Shōnen, 1976-1978. A science fiction epic about the rise & fall of civilization on the deceptively named desert planet of Eden & one boy's universe-spanning search for the planet of his ancestors: Earth. Features numerous cameos from other Science-fiction based Phoenix stories, including the shape-shifting alien "Moopies" first seen in Future, Makimura from Universe & an early model Chihiro Robot from Resurrection.

Turbulent Times:
Published in Manga Shōnen, 1978-1980. The story is about a woodcutter named Benta and his childhood sweetheart, Obu, who are separated and caught up in the events of the Genpei War. Various historical figures, such as Taira no Kiyomori, appear as major and minor characters. The character of Gao (from Ho-ō) appears as a 400-year-old hermit.

The Viz (English) edition is entitled Civil War and is split into two volumes, with Robe of Feathers included as an appendix to the second volume.

Life:
Published in Manga Shōnen, 1980. A TV producer who attempts to procure human clones to use in a The Most Dangerous Game-style reality TV program learns the error of his ways when he is mistaken for a clone himself. This episode is notable for only featuring the Phoenix in flashbacks and also for introducing her half-human daughter who does not appear again after this episode.

Strange Beings:
Published in Manga Shōnen, 1981. The story of a female samurai who is imprisoned in a time-warp by the Phoenix as punishment for her sins along with her faithful retainer & forced to become a healer treating the victims of wars from all over time and space including humans, youkai and various extraterrestrials. This chapter was loosely based on the Hyakki Yakō emakimono by the famous Japanese artist Tosa Mitsunobu (although in the context of the story it's the complete reverse).

Sun:
Published in The Wild Age, 1986-1988. This is the longest story, and was the final volume completed before Tezuka's death.6 It centres around Harima, a young Korean soldier from the Baekje Kingdom whose head is replaced with that of a wolf by Tang Dynasty soldiers following the defeat of the joint Baekje-Yamato force at the Battle of Baekgang. He then escapes to Japan where he becomes the feudal lord Inukami and becomes caught in the middle of the Jinshin War, as well as joining a greater battle between supernatural forces and time-travelling to a bleak future world ruled by a theocracy that claim to have captured the Phoenix. This chapter stands in stark contrast to the earlier historical Phoenix stories, which tended to de-mythologize the mythical characters therein, for instance in Dawn, many Shinto gods are portrayed as mere humans. In this chapter, however, various Youkai, Oni, Tengu and other mythical creatures are shown fighting against Bodhisattva.

Early Works:
Covers the prototype version of the series from the 1950s.

From Tokyopop: After Mahiru has a haunting recurring dream, she meets the Lunar Race, which consists of the vampire Nozomu, the werewolf Akira, the fox Misoka, and the tengu Mitsuru. They need her help to recover the 'Teardrops of the Moon,' the recently-pilfered source of their power. As the battles to recover the teardrops rage on, Mahiru tries to open up the dark, human-hating tengu Mitsuru, and form a bridge between humans and the Lunar Race.

Long ago, in an epic battle of might, King Phelios defeated the Vampire King Duzell. And as both lay dying, Duzell swore that his reincarnation would find King Phelios' reincarnation and exact his revenge. A hundred years later, the moment of reincarnation has arrived...the only problem is that Duzell has been reincarnated as a harmless house cat. And to add to his frustration, he can't find the reincarnation of King Phelios. Luckily, he has been adopted by Phelios' granddaughter, the teenage princess Ishtar, through whom Duzell may be able to track down who in the Phelios tribe is host to the great king's reincarnated soul.

Blond, hip, pragmatic, and cool, Ginji Amano has the power to generate currents with his body like an electric eel. Brunette, equally hip, bespectacled, and rambunctious, Ban Mido has the mystically mysterious "Evil Eye," the power to create illusions in the minds of his foes.

Together, they are the GetBackers, the best retrieval team in the world! They can get back anything taken from clients, and their success rate is (almost) 100%.

But first they have to get some clients—and soon—or this energetic detective duo will starve on the streets!

From Tokyopop: To honor CLAMP's 15th anniversary, CLAMP no Kiseki: The Ultimate Collection features full-color pages, exclusive material, 6 pages of new, never-before-seen manga, and limited-edition collectible figures!

Debochi Amon (14) was always a passionate boy and had a tendency to literally steam up. Amon was living a normal life; going to school, hanging with friends and thinking about his crush on his classmate, Shinomoto Sako. One day, a third eye opens on his forehead after one of his usual “steaming” incidents and a talking owl creature who calls himself Goomin appears. Both characters are confused at the situation at hand and Goomin finally is able to explain the situation to Amon. Amon now possesses Pyrokinesis and his power of his fire increases when his passion grows. His emotion of wanting to protect something, like his crush Shinomoto, triggers the transformation into a demonic figure and his flame is powered through greed. Now, Amon must learn to control and use his powers to protect the human world from Angels!

Our local real estate agency has a secret?! A dimensional travel, fantasy romance about a suspicious owner and a girl who used to be normal.

From Ochibichan:
Miya, Amatsu and Zen have been close friends ever since their childhood. One day, Miya falls in love with a cool high school student, Toujou-kun, so she decides to become his girlfriend. However, Amatsu secretly likes Miya. So, he uses all kinds of ways to interfere with her! Moreover, the three of them have a very huge secret!!

From An Endless Story:

For normal people, about one unfortunate event occurs in a 1 day period. But for some reason, it's different for Rinko. Unfortunate things seem to pile up one after another. All Rinko wishes for is to find some happiness in her life. With the upcoming New Year's celebration and a date with her best friend, Tatsuyuki, will her hopes and dreams be fulfilled?

From Intercross:
Makoto Hourai is given to Alice Kamiya as an "offering" because of a long-established contract between the two families. He is there in order to assist Alice, who is actually a vampire. As an offering, Makoto is supposed to give Alice his blood, however, he is anemic. How does Alice manage to drink blood, if Makoto can't provide for her? How does Makoto feel about all this?

The story takes places in 17th century, France. Belmondo, a son of a noble father and a deceased witch mother, was born and raised in a cloister's basement. He is the master of an underground prison and has the rights to use any means to bring out confessions from his prisoners, namely by using "torture". With his eye, he is able to see through them... That is, if they do not comply to his questions.

[Note : the name 'Belmondo' is taken from a very famous French actor, Jean-Paul Belmondo]