The main character is a detective, Kazuhiko Amamiya, suffering from Multiple Personality Disorder (a.k.a. Dissociative Identity Disorder). Starting out as a violent detective series with a twist (the twist being the variant personalities that take over Detective Amamiya at various intervals), the series evolves into an exceptionally complex and involved sci-fi conspiracy story.

Tatsuo, Hide, Satoshi and Aya worked together to cheat people out of money. They tended to target marriage services, where they con money out of people looking for love. They were good at it, until they crossed the wrong guy. Then they saw the world below the surface of dupes to cheat, when the 'collection agency' came for them with extreme violence.

The person who takes Satoshi and Hide, and then Aya and Tatsuo, is a wild-eyed maniac who seems to get off on the torture. There may be hope for Tatsuo, though, because the man recognizes him. The torturer is "Akasada" a bullied kid that Tatsuo knew from school. Now Tatsuo and Aya have been pulled, against their will, into Aka's world. [tethysdust]

Hunters are a special breed, dedicated to tracking down treasures, magical beasts, and even other men. But such pursuits require a license, and less than one in a hundred thousand can pass the grueling qualification exam. Those who do pass gain access to restricted areas, amazing stores of information, and the right to call themselves Hunters.

Fujinomiya Soujirou is transported to a fantasy world with only his Daisho (pair of samurai swords) in hand. The katana can talk and swiftly informs him that it is Hotarumaru, the legendary national treasure of Japan thought lost during World War II. The wakizashi is to young to have a voice, to Souji names it Sakura. This is the story of Souji and Hotarumaru's journey through a new world as he seeks to achieve ... a sword harem?

This protagonist, the most demonically strong exorcist. Akira the S-class exorcist sent from Germany to investigate a paranormal event in a certain city in Japan. He shoots creatures from other worlds with his beautiful exorcist partner Chikage.

From Viz:
In the 21st century, just when the human race needs new heroes, the Lucifer Hawks enter Earth's dimension. The members of the A.M.P., six young women with incredible powers, are set to defend the human race against these monstrous entities from another world.

A fantasy about a knight who lost everything and his story of survival strategy and territory restoration!

One day, when the lord's son, Agredios, came back to the village after a long hunt, the sounds of villagers bustling and their laughter were all gone. After learning that the "witch" that lives in the "Forbidden Forest" was the cause of their demise, his despair turned to rage and he stormed into the forest for revenge alone.

Tower Defense & Dungeon Attack RPG
I saw the ending to the game no one was able to clear.
But, when I came to my senses, I was inside of the game.
In fact, I was in the tutorial stage, a place where strategy was impossible.
“I’ll clear this bullshit game no matter what……!”

A cat familiar goes looking for a kawaii mahou shoujo to save the world, but the chosen one is a rather special girl.

A mysterious mansion has towered proudly over the Tokyo district of Numanakarai since the Taisho period. Those who enter either never escape, or leave having experienced horrors untold, and with the desire to take revenge.

Follows the story of “Edo's Sanni-en (Sajin no)” Takasaka Jinouchi, Jozawa Junai, Shoji Jinouchi. Three years after the battle of Sekigahara (1603 AD), Okubo Changan invited Takasaka Junouchi, who is known as a former thief, to participate in the battle, but what will he get in return?

Anezaki Satoru, a Genius had his childhood friend murdered and raped, he then tracks down her 15 killers and he murders them, he then gets sentenced to death for his crimes of murder, after being executed though, he found himself in a parallel apocalyptic world...

In ancient times, there existed the land of Wa, split between the reign of the gods and the world of man. It was an age when gods and men existed together.

Miyo, an orphan girl, lived in fear of death as the designated sacrifice for the ruler of her village, Kippuuson-no-Mikoto-no-Kami. However, her fate changed as she encountered En no Ozuno, a monk with supernatural abilities capable of conversing with the gods.

An orphan girl, a great monk, and a demon boy. Follow their adventure as they encounter the gods, traveling through even dimension and time.

The urban exploration of two teenagers causes them to run into a mysterious "box", which encloses those infected with a virus called "deadite". In that city, there is a teacher named Katsuragi Zakuro. Which hides a secret...

After the events of Baki-Dou, the famous Kenpo master Retsu Kaioh wakes up in a new world unknown to him.

Note: This is the official entry, not to be confused with the Doujinshi from Twitter user @sakuramankiti. As of now there is no official cover so the December 2020 issue of Monthly Shonen Champion is being used instead.

The older brother, imprisoned by his sister, dies just as he escapes and is reincarnated in another world!
He thought he had been freed from his demonic sister, but now she too has been reincarnated in the same world...?

WN Raw: https://ncode.syosetu.com/n7437dj/

Yuuji is a genius at track and field. But he has zero interest running around in circles, he's happy as a clam in the Occult Research Club. Although he's only in the club for kicks, things get serious when a real spirit shows up at school! Life's about to get really strange in Sugisawa Town #3 High School!

Seeing it brings misfortune; defiling it brings a curse? Introducing a new era of strangeness, abandoning seriousness!

On a stormy day, a landslide destroys a fence, and siblings who ventured into a long-prohibited area encounter a terrifyingly bizarre creature...
"I'm a curse god, you know!? Don't you think anything of this grotesque form?!?"
The unflappable siblings, rather than being scared, casually call the creature "Dara-San" and grow fond of it!?

Seemingly scary but not at all! A new era of occult comedy that leaves seriousness behind.

Cha Hyeon-seong was a boy who had a life full of pain and suffering. One day, he was murdered by beasts of unknown origin, yet he was resurrected and awakened from his death. In front of him was Son Ga-young, a hunter going after him and the beasts. After this began Hyeon-seong’s struggle for survival in the middle of a constant battle between the two groups - the humans and the beasts.

Airi Hirakawa, a model in a popular woman magazine, is suddenly hit by someone in front of her house and wakes up in a room full of garbage. Airi is confused when she is suddenly proposed by Hirokazu Imai, the man who is her kidnapper and stalker.

And this is how her life of confinement begins, where suffers sexual violence and where even toilet breaks and meals are managed.

*WARNING*
Contains abuse, kidnapping, rape, moral degradation, sadism etc.