A collection of oneshots:

1) Tokyo Ants
A special security group consisting of highly-skilled people rescues a hostage.

2) Enma 1 & 2
Two different stories about people who can see electricity when someone tells a lie. (Enma 2 story by: Ookawara Ton)

3) Butterfly: Swallow Tail
About a boy who can see swallowtail butterflies around people who are going to die.

One day, the colossal tower, "Babel" suddenly appeared in the city of Tokyo. High school student Taiga holds a belief of, "Not standing out is the best." While he dreams of chasing after his sister from the self-defense forces who went missing inside Babel, his daily life still continues to be boring, and the same as usual.
However, on one certain day, the "time to fight" finally confronts Taiga! Young man, fight and survive in the tower! Grasp it! A new era filled with a battle of "superpowers" and an "unprecedented" tale of survival, begins now!

From Vampire Knights:

Touko is a 15-year-old aspiring actress who can be a bit of a liar. But thanks to one lie, she lands herself in the middle of an audition for a TV drama! A producer she meets there, Kyouichi, sees potential talent in her as an actress! She's found what she wants to do in life, but what kind of future awaits her?!

From Tokyopop:
An introspective, character-driven series, Tokyo Babylon reads like a manga version of The X-Files. Its story -- a modern-day fantasy -- follows a young onmyouji (spiritual medium) on his quest to protect Tokyo from evil spirits.
Teenaged Subaru Sumeragi is the 13th head of the Sumeragi clan. Together with his twin sister Hokuto and the mysterious veterinarian Seishirou, Subaru travels around Tokyo, calming the ghosts that threaten the city.

It is the fate of the Hirasaka family to protect a barrier underneath Tokyo that separates the human world from the demons of another world. One day, an incident in the underground tunnels claims the lives of 6 civilians and a Hirasaka. The mass death and the mysterious circumstances under which it occurred have been hushed up by some powerful, but unknown, people. These people seem to be dismantling the barrier the Hirasaka family has fought so hard to protect, and it is up to the remaining Hirasaka to stop them.

From xiaojiangworld:

City boy, Chiaki, was asked to take on a “Big Project” by his grandfather and sent to Tokachi, Hokkaido. However, upon his arrival to the project site, Chiaki is met with farming land full of cattle…the countryside?!

In order to help the spoilt Chiaki mature, his grandfather tells him to “earn enough money to pay for your flight home.”

In front of a hopeless Chiaki, appears the extremely tall, Soichiro, who was under the impression that he was going to be living with a girl who would be undergoing bridal training…?!

~Hokkaido County Boy x Tokyo Raised Selfish Boy-Farm Village Roommate BL!

From Viz:
Mimori Kosaka's dream comes true when she's accepted to the Meidai Attached High School and gets to wear their super-fashionable uniform! She's excited about having a fun freshman year of high school, but things don't turn out as effortlessly as she had hoped.

Includes the following side stories:
Volume 1: Basically Pure-Hearted
Volume 2: Kiss the Mike!

It's the year 2020 AD, and Tokyo II is a city infested with crime. Women can no longer go out in the streets alone without being victimized. Not wanting their daughter to suffer the same fate, Tsukasa Kozuki's cop parents raise her as a boy. When they are suddenly killed by one of the yakuza's in-fights, Tsukasa is left orphaned on the streets along with her three brothers.

With no other options, she goes to the only person she can think of for help: pokerface Ryuji Shirogami, her classmate of 8 years and also the head leader of the powerful yakuza group, Kuryugumi. Ryuji, whose father was also a victim of the same yakuza fight, agrees to take her on as his personal bodyguard. As they set out to find their enemy, Ryuji slaps an increasing amount of debt onto Tsukasa, using all manner of ploys to keep the reluctant Tsukasa by his side.

Even if this love, this tenderness will bring about the destruction of the world..."Because...I met you." Mashiro Ouha was a normal high school student...until the day she got attacked by snake-like creatures. Oblivious to her destiny, she had always believed that her life would be an ordinary one...

A girl named Yuzuko, wanted to buy a new wristwatch for her father in the department store that pierces through the heaven. On her way, she got attacked by an one piece dress. A mysterious dude came out and helped her. Just what is the 'desire' that he's talking about? And just what kind the department store it is?

It was just a normal day for Kokoro and his friends, until they received a grim shock: their world had been invaded by dragons! These vicious dragons consumed every human they saw, and destroyed everything in their paths. Japan’s military turned out to be useless against these creatures. Just as all hope was lost, a mysterious classified military division appeared, with knowledge of these dragons’ secrets. What is this unknown division? How do they have information on these never-before-seen dragons? Where did these dragons come from? What is their purpose? Who is their leader? Can Kokoro and his friends unravel these mysteries before it’s too late?

"When we enter high school, be sure to make me your own." was the promise made to Tetsuo Sugihara by childhood friend Kaede Shiraishi as young children before she moved away. Kaede never left Tetsuo's mind for a second for eight whole years, his dreams finally came true when they both reunited in high school. However his dream is crushed when she started dating his older brother. crushed and broken hearted he decides to take up a shady middle aged man on a job offer in Tokyo's Shimokitazawa district instead of college with his crush and older brother and after graduation sets off for his chance for change in this youth drama that tugs at your heartstrings as it depicts a young man who continues to mature through his many encounters and leave you wondering the questions,What awaits Tetsuo during his journey? Who awaits Tetsuo during his journey? Will he love again?...

When Tokyo ESP meets Ga-rei...

In post-apocalyptic Japan, a nameless mahjong player ascends a massive tower, facing formidable opponents in life or death gambles.

Strange murders are happening in Tokyo. Due to liquid evidence at the scene, the police conclude the attacks are the acts of man-eating monsters, ghouls.
College buddies Kaneki and Hide come up with the idea that ghouls are imitating humans so that's why they haven't ever seen one. Little did they know that their theory may very well be reality.

Note: The prototype chapter won the Young Jump 113th Grand Prix award in 2010.

This is oneshot of Tokyo Ghoul.

A redrawn variant of Chapter 1: Tragedy.

In Tokyo, an unchanging despair is lurking.
Mysterious man-eating beings, ghouls, run rampant in Tokyo. Living hidden during everyday life, the existence of ghouls, whose true identities are shrouded in mystery, permanently terrorizes Tokyo's residents.
At CCG, the sole institution that investigates and resolves cases related to ghouls, Haise Sasaki has been assigned a certain mission. While dealing with the unruly four problem children known as "Quinx", has Haise's days of suffering begun?

In the 2020’s the Japanese female culture was extremely corrupted in the eyes of the first women prime minister. To bring back the beauty of Japanese femininity, she created the Amazon Academy, a girls-only school, on an artificial island isolated in the middle of the Pacific Ocean.

Amesu Kumi just transferred into Amazon Academy to investigate the death of her older sister, Towa, who also attended the school until she died in a shroud of mystery. The only clue she has is the name Burai Sachiko left in Towa’s cell phone. How could Kumi have known that the school literally turns into a battlefield when classes are over; where petite girls beat each other senseless in order to survive?

An up-and-coming genius throws down his gauntlet! Frenetic & violent SF buddy action!

Meet the high school girl duo Line and Ann! Their job is to crack down on evil illegal aliens living on Earth, as agents of the Planetary Immigration Bureau!

High school girls X aliens X shootouts! Get your dose of violent sci-fi buddy action right here!