In this world, there are two types of humans: Normal Humans and Synthetic Humans.

From MangaHelpers:
One day, Serizawa fell asleep at work and had a dream about a past love that he wronged when he was in middle school. On the way home, he was involved in an accident, and a woman who knew him called for an ambulance. Now the woman has his phone number, but he doesn't know her identity. Serizawa thinks back over the women he has loved in the past, trying to determine who this woman that has re-entered his life is.

Kang Chan and Seyeon have been close friends since they were young after being introduced by their parents. After entering high school, Seyeon suddenly received a confession from Kang Chan and became aware of Kang Chan since then. Meanwhile, Naeun is displeased with their relationship. The trivial and noisy story of their love triangle and those around them...

The plot is a monster who came from the future to change the past. One woman must be removed to change the past. The name of the target to remove is Jung Eunji. In order to approach Eunji who is a hero, Tae-gwu is also a prospective hero. Will Taegu remove the threat and change the future?

1967, summer. Kenichi, a 11 years old boy, discovers a magic mountain, thanks to a salamander confined in a museum.

In the whole world there lay a mythical creatures which have their own ecosystem and can’t be considered part of the food chain. They also have supernatural powers and live together with humans. Ferry is one of the professional investigator, who researches the connection between the creatures and humans and is called a Genjuu Chousain (Mythical Beast Investigator). The story starts when a flying reptilian dragon (Wyvern) is attacking a village, and a Girl dispatch on the quest to research and investigate Wyvern and other mythical creatures.

A collection of short stories revolving around sci-fi themes.

From generation to generation, the Oike family has handed down the vocation of exorcising a cursed box. This bizarre fantasy weaves humans and phantoms into a story revolving around Miyo Oike, a descendant of the Oike family.

A story about a new enthusiastic teacher, Naoki Sakura, who took up his new job in all-girls high school! He became the homeroom teacher of the first years, but the girls in the class contains full of different personalities. He declared to these girls "I want all of you to love one another!" Will he and his students be able to build a teacher-student relationship with that goal!?

With the space program attempting to travel to Mars, 21st century scientists were tasked with warming up the planet so that humans could survive on its surface. They came up with an efficient and cost effective plan of sending cockroaches and mold to the surface so that the mold would absorb the sunlight and the insect corpses would serve as a food source for the mold.
It is now the year 2577 and the first manned ship to Mars has landed on the planet and the six crew members are ready for their mission. But what they find are giant mutated humanoid cockroaches with incredible physical strength. The crew members are easily wiped out, but not before sending a transmission back to Earth. Now, humanity will send elite warriors to exterminate the mutated bugs and claim back Mars.

Note: Was nominated for the 6th Manga Taishou in 2013.

This school is known for its football club Ranzan, a refuge from the head of the largest departments. To avoid disbanding the club, the manager using the new football coach: Tetsuo Kuroki. He will choose to form teams with the strongest students. And indeed, four of them come to integrate the school. Among them Shingo Narita, a student is turbulent but not a bad person who does not hesitate to fight to defend his colleagues. When he proposed to join the club soccer, a sport he practiced a few years ago, his enthusiasm took over. Through sport, Professor Kuroki will teach them that there are other solutions that come from a single blow.

This series is a complete remake of the original Mao Dante, with new designs an a story slightly inspired by the anime of 2002. This time, the timespan of the story is longer, the character design is different, and all unanswered questions left when the original series was interrupted, are answered. This time, Mao Dante has a proper ending.

In the year 21XX, robots are a typical part of everyday life. Even in this world however, Mono-1 is quite the oddity as the newest model of Robot. Although her intelligence is at the level of a child, her creator designed her to grow through observation, and leaves her in the care of his son, Morohito, to help her find new experiences to learn from

Kentarou is a plain, nondescript college student who has never had a girlfriend or any friends. After getting hit on the head by a wayward ball, he begins to notice that there are increasingly long periods of time in which he cannot remember what he was doing.

One afternoon, he regains consciousness in an apartment he'd never been to before - and sitting next to him is a young man who then tells him "You're being possessed by the spirit of my dead girlfriend"...

Summary by amoxi:
A new big beautiful guy is transferred in Hoshino's class. Wait! He's Ichinose, the troublemaker of middle school. At that time Hoshino has written a love novel between Ichinose and his new stepbrother. When the novel was discovered by a classmate, they make fun of them and triggered Ichinose's wrath. Then ichinose transferred. Maybe was Hoshino's fault? And now he's back!

A collection of stories:

• Hot Gaze in the Cold Weather

• C.5 - The Love Relationship between Mai-chan and Ecchan

• Madder Memory

High school students Kamijou Haruta and Homura Chika are members of a wind instrument club that is on the verge of being shut down. The two are childhood friends and they spend their days practicing hard, while also trying to recruit new members. When a certain incident happens within their school, they work together to solve it.

(Source: ANN)

Sayoko is an incredibly kind, but solitary, young kimono-clad lady who has certain supernatural abilities. She can see ghosts, and she frees them from their places of death by agreeing to let them haunt her instead. As a result, everywhere she goes, she is followed by an army of well-meaning spirits that only she can see. Her weirdness tends to throw any normal people who would have otherwise possibly become her friends.

Inaba is a poor college student who happens to accidentally run over Sayoko with his bicycle.
Sayoko normally is unable to interact with people for long periods of time, because since she is haunted she endangers the health of other people just by being close to them.... But for some reason Inaba is completely fine with being around Sayoko even for long periods of time....

...Just what's going on?