From MangaHelpers:

Unknown entities known as "Witches" roam the cities. They exist solely to destroy humans and turn them into one of the Witches. There is a sector in the government known as the Suppression Corps that specializes in dealing with these Witches, who are completely immune to conventional weaponry. Hansel Takamine is the leader of this group, and has an extreme hatred towards the Witches. With his sword imbued with the powers to eradicate Witches, he fights to avenge his sister who was murdered by these monsters. [DrCoke]

Secchun, who moved away when his mother remarried, was invited to live together with a childhood friend so they could both attend the same high school. Little did Secchun realize that reuniting with his friend would go 'beyond' his expectations.

Based on the original song Goumontou wa Nemuranai by monthy.

What do you do when you have lost everything? Lloyd Lowell has found his answer. In Leon City, people are drawn to the torture of tower, Torcia Tower. There, it is rumored, lies treasures which can bring you fortune, fame and, most importantly—eternal life.

However, nothing goes as planned when Lloyd enters the tower...

V.1: 拷問塔は眠らない －拷問卿の三姉妹－
V.2: 拷問塔は眠らない －エメラルドの少女－
V.3: 拷問塔は眠らない －悪の円環－

From the author of Necromancer.

Part of a larger series about anthropomorphic cats in a surreal, Ghibli-like fantasy land.

Cutie Honey for the 21st Century.
Seiko Hayami a private detective and her partner Hisashi Hanyu, are tasked with solving the cases that the police can’t handle. What they soon uncover is a seedy underbelly of crime perpetrated by an organization that can turn humans into monsters.
With Seiko being overwhelmed by these outrageous cases will a hero arise to help in her stead?
A warrior of love only heard from stories long ago.

Stories included in this volume:
1. Mishiranu Machi (見知らぬ街) (Date:1989)
A group of teenagers went on a summer holiday and had a car accident. The woke up and found the whole city was empty. How can they escape the eerie place? But more importantly, can they really all go back?

Note:
It has been suggested that MATSUMOTO Yoko traced some of her panels of this stroy from Birthday Present (MIYAWAKI Akiko).

2. Youkoso Mystery Tour e (ようこそミステリーツアーへ)
In the summer holiday, a 15 year old girl Kana went on a vacation on an island, when a certain hotel giving out invitation to join a treasure hunt event with only a ridiculously impossible map to read. With a group of four along with her cousin Riku who can't handle transportation, her little brother Takashi who likes mystery and her brother's girlfriend Natsuki, the group join the event, meeting suspicious people and witnessing unexplainable occurences. Can they find the treasure? Is there any hidden agenda from the hotel owner by making such an event?

3. A wa Akuma no A (アは悪魔のア)
An almost dead man entrusted a Devil statue to Riku, a 15 year old boy. Before they realized, Kana, Riku, Takashi and Natsuki were already involved in an adventure involving antiques, cops, a devil in disguise, an angel in custody, and a cold blooded killer.

A collection of short stories.

I. Tody.
II. The Last Bus.
III. Family.
IV. Evil Spirit.
V. Inviting Darkness. Also called Soshite Yami wa Yomigaeru/And the Darkness Will Return/Coming Dark.

1. Kuro no Kumikyoku
After Ricardo's death Jess suddenly become so different, he even forgot about a song that he composed for Cathy, his girlfriend. His piano playing become so similar with Ricardo's and he also becomes close with Ricardo's lover.

2. Tenshi wa Yami ni Hohoemu
a. Cole: When someone encounter a person who looks exactly like theirselves, it means those person will die in a near future.
b. Linda: Violet is a girl who longs for a mother, attention, and love.
c. Violet: Short story about the lost of a lover and the happy medicine.

3. Bell ga Nattara
A mysterious phone call from afterlife.

Many years ago, an ancient civilization once ruled Earth. They were known for advanced artifacts and machines, but were destroyed in the end due to the misuse of their creations. Creating indestructible message plates written in Hebrew, these people left messages for later generations, informing them that if they could not find a good use for their creations, they should be destroyed.

Various entities such as paramilitaries, national armies and armed private forces began to secretly search for these "mysterious" artifacts in order to be used for their own good and against their enemies after the end of the Cold War. Only the ARCAM Corporation can stop these forces from destroying themselves with these "advanced" machines. With the help of its military arm, the ARCAM Private Army and their elite secret agents known as Spriggans (or Strikers), ARCAM plans to turn the tides of battle against those who would threaten the safety of humanity by using the dangerous artifacts.

Manipulating a demon with a worm-eaten body, the girl exterminates all sinners!! Accepting requests from the families of victims killed unreasonably, boys and girls are set on continuing to kill the sinners. They are responsible for this business without knowing when it will end, but also unable to live a different life, today also they open the curtain of revenge

An audiophile jumps to his death, meets something on the way down... and ends up crawling away from a pool of his own blood.
An unmotivated music high school student (our main protagonist) vs. a speeding truck meets the same fate in front of his friends.
Now those two must kill each other "in order to understand the joy of living", as proxy, with the power of classical music incarnated.

From MangaHelpers:
One day, Son happened across a woman, named Shue, that he had loved as an older sister when they were young. It looked like it was the same woman, with the same scars, but Son had thought she was dead. In fact, she was a reanimated corpse, resurrected by a young girl named Fuu to work as her minion. Son becomes Fuu's follower, determined to find a way to return Shue's soul to her body so that she might live again. However, Son doesn't know what he's gotten into with Fuu, though, as she ends up in conflict with many other practitioners of her arts, using Shue's reanimated corpse to do things that Son would rather have never seen.

A collection of bizarre, twisted one-shots with horror, supernatural and psychological themes.

*Included in the re-released edition of Tetsunagi Oni

From September Scanlations:

Misono Kazuki is a college student pursuing a dream of becoming a famous novelist but unfortunately, for someone trying to pen a supernatural YA novel, he's got next to no experience with close encounters of the spiritual kind. To remedy this, at the suggestion of a friend, he heads to a supposedly haunted shrine late one moonlit evening, and while he doesn't find any ghosts, he does find something much more interesting.

That day, I died at the train station and my mind got transferred inside to a body of a girl in a fantasy world.

This is oneshot of Tokyo Ghoul.

Japan is being invaded by parasitic gods. The only one left to stop them is Nakua, the spider god. She enlists the help of Taromaru, an otherwise normal boy who has the Nakua's spider familiar resting inside him. Together they free Japan's gods from the control of the parasites.

From Ouzoku Scans:
Towa always had the gift of sensing danger. One day, she gets a bad premonition about a boy. She, along with her friend Ririko, tries hard to prevent it from happening. What will happen next?

From Fairgame:
Haruka is an unlucky highschooler but one day she grab the happiness. She is going to get married with her fated husband, Masayoshi. He had been married once before but he is serious and kind, and supposed to make happy family life but then...

While hiking a mountain with his friend, Dong-uk stops to take a picture with him on a steep ledge which collapses and leaves them stranded on an isolated cliff. He accidentally drops a chocolate bar and it gets caught in a tree below them. While his friend is descending the cliff to retrieve it, Dong-uk accidently lets go of the makeshift rope and watches him fall to his death...but is he truly dead?