Togashi, Yoshihiro

Fourteen-year-old thug Yuusuke Urameshi spends his days skipping school and causing trouble for the adults in his life. Yuusuke regularly engages in street brawls against rival Kazuma Kuwabara and ridicules his childhood friend Keiko Yukimura. Filled with self-loathing and the burden of an alcoholic mother, Yuusuke sacrifices it all in a split-second decision—he tackles a small child out of the way of an oncoming car, losing his life in the process.

Spirit guide Botan intervenes, allowing Yuusuke to see how the people in his life react to his death; he is moved by the emotional ruin his loss causes his mother, Keiko, and even Kuwabara. Additionally, due to his death's heroic nature, he receives an opportunity to return to life from the Spirit World ruler's son, Koenma.

Koenma hires Yuusuke as a "Spirit Detective" and tasks him with solving a series of increasingly challenging paranormal mysteries. Battling and befriending demons such as the beautiful Kurama and hostile Hiei, Yuusuke further develops and utilizes his skills as a fighter. But as dark forces move in the Underworld, Yuusuke struggles alongside his companions to defend everything he took for granted.

[Written by MAL Rewrite]

Yuu☆Yuu☆Hakusho

Yu Yu Hakusho

幽☆遊☆白書

Fujita, Kazuhiro

Ushio to Tora centers around the travails and battles of Ushio Aotsuki, who is constantly being stalked and aided by a gigantic, supernatural and sometimes invisible tiger-like monster.

Ushio's family maintains a Shinto temple in Japan, where ~500 years ago, his samurai ancestor battled that same tiger to a standstill, and eventually trapped him against a rock using a blessed spear called the "Beast Spear," which in addition to its intrinsic formidability as a weapon, can also endow its wielder with the martial ability of the ancestor who originally wielded it.

Ushio accidentally unsealed the cave Tora was trapped in. Initially, Ushio refuses to remove the spear pinning Tora down, but Tora's unsealed presence summons various monsters who wish to fight him, and by extension Ushio. Ushio is forced to free Tora, who would like to eat Ushio, but dares not since Ushio keeps the spear close by. The series focuses on their relationship, interspersed with battles against mythological foes, and with Tora's attempts to grapple with modern life.

(Source: Wikipedia)

Ushio to Tora

Ushio and Tora

うしおととら

Shiina, Takashi

Overdevelopment and crowding in Japan has forced many of its indigenous spirits and ghosts to lose their homes. Due to problems caused by the homeless spirits, a new profession was created, the Ghost Sweeper (GS). Private exorcists for hire; they serve only the highest bidder to survive in the cutthroat corporate world. Among this, the Mikami GS Company, led by Reiko Mikami and her two assistants, the teenage boy Tadao Yokoshima and the ghost girl Okinu, is said to be the best.

(Source: Wikipedia)

Included one-shot:
Volume 1: Gokuraku Mouja (Ghost Sweeping in the Haunted Mansion)

GS Mikami: Gokuraku Daisakusen!!

GS美神 極楽大作戦!!

Uno, Hiroshi

At the end of 19th Century, Captain Drake, the pirate who traveled all over the world died. Rumor has it that he hide his treasure that is worth thousand millions pounds away from people. The map to this treasure is being torn into 2 parts. One part of it is owned by the military, lead by Colonel Visconti. The another part is owned by Drake's son. 

That young boy's name is Captain Kid, and with his Black Lightening sword and Kid's cunning crews the journey to find Captain Drake's hidden treasure begins.

Captain Kid

キャプテンキッド

Obata, Takeshi

Sendo, Susumu

In a world where djinn rule and humans are enslaved, Toto and Loukir break the seals of the century-old prison of the "gentle genie," Rampou, in order to try and save their country...

(Source: Deja-vu)

Arabian Lamp Lamp

魔神冒険譚〈アラビアン〉ランプ・ランプ

Kuroiwa, Yoshihiro

Iizuka, Yukihiro

Raimon Ryuuta and Kuuko are sibling. Their parent is a treasure hunter, so since they were little they lives in a shrine with their parent's best friend who is an old man.  

Ryuuta and Kuuko are interested in anything strange, curious issues. Together they set up their business as a Fushigi Hunter, to solve cases of strange paranormal activity people asking them for help.

Fushigi Hunter

不思議ハンター

Takada, Yuuzo

Through a strange series of events, a young man named Yakumo Fuuji becomes the immortal slave of the last of a race of 3 Eyed immortals. The immortal, Pai, absorbs his soul to save his life, making him immortal in the process. Now, he begins a journey with the female immortal in an attempt to find a way of becoming human. Of course, there are many complications along the way, not the least of which being that the immortal is a female with a split personality, one achingly cute and the other being no-nonsense destructive power, and romances that develop between.

3x3 Eyes

3×3 EYES

Itou, Akihiro

Problems of the supernatural are menacing the city, and it's up to Kagura Security to stop them! Together, firey president Yuka, stylish Maki, computer expert Takami, brilliant mechanic Yui, and normal guy Youichi, are detectives, damage control, and more.

Geobreeders

ジオブリーダーズ

Tezuka, Osamu

Collection of various short stories. 

(Source: M-U)

Tiger Books

タイガーブックス

Kusunoki, Kei

Jinnai, an enthusiastic cop is now at lost. First a gruesome murder case he's working on is assumed by people that it is a work of a demon. Then, his unit is getting help by a special agent sent by FBI to solve this case. What kind of special agent? An agent that specifically know how to handle Demon? Great! And that agent is just a high school girl? What does her unit called again? G-man.

Things get more complicate when the witness of the crime is also a beautiful woman and now both of them fell in love with him. Jinnai tries to be strong but will he be able to resist them? Not to mention another G-man who fell in love with that high school girl? Will Jinnai handle all of this mess and solve all cases concerning demonic entity at the same time.

Daitokai ni Hoero

大都会にほえろ

Araki, Hirohiko

In 1989, Joseph Joestar arrives in Japan to meet his troubled grandson Joutarou Kuujou at the request of his daughter Holly. Joutarou has locked himself in a jail cell out of fear that an evil spirit is possessing him and that he may cause harm to others. However, Joseph reveals the truth to Joutarou: this "spirit" is really a "Stand," a physical manifestation of one's fighting spirit. What's more, Joseph and his companion Mohammed Avdol possess Stands of their own and have learned to control them with ease.

Joseph's arrival comes with another piece of news: an old family enemy has returned from the grave, causing the Stands of the Joestar family to awaken. However, when a Stand manifests within Holly, her inability to cope with it leaves her gravely ill, stirring the men into action.

Armed with the power of Stands, a globe-trotting adventure from Japan to Egypt—where their adversary resides—begins. Meeting an array of nefarious Stand users along the way, as well as new allies, the team leads a crusade to save Holly and put an end to their enemy for good.

[Written by MAL Rewrite]

JoJo no Kimyou na Bouken Part 3: Stardust Crusaders

JoJo's Bizarre Adventure Part 3: Stardust Crusaders

ジョジョの奇妙な冒険 スターダストクルセイダース

Nagai, Go

Soft-hearted Akira Fudou has always been somewhat of a pushover. When he reunites with his childhood friend, Ryou Asuka, in a fateful encounter, Ryou reveals to him the terrifying reality of his father's research: demons exist and are planning to claim possession of the earth once again.

Eager to help his friend save humanity, Akira agrees to attend Black Sabbath, a party filled with depravity and corruption, to attempt to merge with a demon. A near-death encounter causes him to unify with Amon, a demon feared amongst even his own kind. Together they form Devilman, a combination of Amon's strength and Akira's pure heart.

After uniting with Amon, Akira begins to fight against the demons with his newfound power, desperate to stop the downfall of all human civilization.

[Written by MAL Rewrite]

Manga Like Konjiki no Gash!!