From Elision-Scans:

One day, Unohana unexpectedly meets two brothers — and they both happen to be demons. Nobody can see them except for Unohana, a schoolgirl who can see what nobody else can see. But when she is attacked by the spirit of a black dog, even more strange forces are awoken.

Travelling salespeople visit a small, remote town. However, neither the town, it's inhabitants, nor the salespeople are what anybody would consider "normal".
A supernatural crackpot comedy.

1-2+extra) Narushima, an elite detective of the Metropolitan Police Department who is guarding an important person at football stadium happens to meet his old friend, Fujisaki. When they were promising football players in same team, Fujisaki always dominated Narushima and deprived all of Narushima including of his pride and girlfriend. But Narushima realizes that Fujisaki becomes a sniper. He failed to catch Fujisaki and Fujisaki also failed to kill the VIP. They meet again and make love together...

3) An ex-member of swimming club encourages a retired member by fatal injury to tell the ace swimmer his feeling. Ace swimmer accepts it because he loves injured butterflies...

4) A teacher tries to find out the reason why his student acts rebelliously only against him...

From a school story of a kouhai being fooled by his ill-mannered senpai, to vampires and time travel, the vast, heart-clinching world of Kashio is jam-packed into this book!

1. Chronic

2-3. Haru e no Tobira

4. Sawaranaide, Kowareteimasu.
After acting up in Soccer Club, Saitani is forced to resign and his teacher suggests he join the Astronomy Club. There, it’s just him and the supposedly sleazy upperclassman, Tajima. Although Tajima is very unmotivated and likes to order his kouhai around, Saitanai feels drawn to his innocence. But someone who knows Tajima tells Saitani that he loves men.

From Aerandria Scans:

Venice, the latter half of the 16th century. Young Legare works as an apprentice to his father, an apothecary, but his real passion is the forbidden art of Alchemy. One day, a fortune teller predicts that he will meet four people with the power to change destiny and shortly after, his father is incarcerated on suspicion of alchemy. Legare, the real alchemist, is forced to produce gold for the person who arrested his father. Follow him through the mysteries of Venice, through his struggles, his encounters with powerful friends and enemies, and his search for the Philosopher's Stone.

A kappa pines for a rokurokubi across a fence.

From Garo 1982-07.

Volume 1:
Seto Atsushi, the student council president, is tired of spending his days in the student council where there’s nothing but boys, and decides to recruit new members, but on one condition: they must be girls! Then Ozawa Kanae, a former delinquent, shows up in the screening for the secretary position carrying a bamboo sword…?! This is a collection of five related oneshots with a specially drawn short extra, "Classified!! Student Council Report!!"

Content:
Ch.1 Seishun Trickers
Ch.2 Seishun Trickers ~Newspaper Club's Komatsu-san~
Ch.3 Clear Sky
Ch.4 Brandnew Days
Extra 4.5 Classified!! Student Council Report!!
—Freewheeling Scanlations

Volume 2:
Komatsu Akina is a passionate photographer for her school’s newspaper club. When Aoi-kun of the Student Council confesses to her, all of a sudden she has this huge decision to make. Since she has never dated before, Komatsu is confused as to whether or not she should date the extremely popular Aoi-kun, who is constantly surrounded by pretty girls.
—Dazzling Scans

Spin-off:
Sakashita-senpai no Koigokoro

A collection of oneshots.

1) Hen Ai: A oneshot that describes the "strange love" the two main characters share. Rather humorous, as it often brings up that one is rather adamant about wanting to roleplay and the other "grudgingly" goes along with it.

2) Tomari Ki (Torch): A man is stabbed and left for dead in an alley, but he is saved by a young man who has a halo and wings who calls for an ambulance. Later, the boy appears at the man's front door and claims to be an angel with broken wings, and states that the only way for them to heal is to make people happy.

3) Messiah no Yakubi (Messiah's Bad Day): A man known as the Messiah whose tongue technique is said to heal impotence takes up a job to heal a nervous-looking man, but is quite surprised by the turnout.

4) Ore no Doukyuusei ga Binkan Sugite Yabai!: A pair of high schoolers decide to experiment by giving each other blowjobs. One wants to escalate to something more, but the other isn't sure...

5) Ore no Doukyuusei ga Kagen wo Shiranakute Tsurai: Continuation of the previous story. It escalates.

6) Kyoushitsu no Yugami: A oneshot regarding the "relationship" between a teacher and his lonely, introverted student. (sequel to Yugami Hajime from the manga Yajirushi)

A collection of illogical plot lines.

A new series about modern-day ninjas by the creators of Freezing. Official site with RAWs: http://yawaspi.com/monochrome/index.html

From MyPersonal-scan:
From his late grandfather Viscount Disward, Huey has inherited The Mystical Library of Dantalian, a collection of powerful Mystical Books demonic and supernatural. Together with the dark and mysterious Dariane, they pursue Mystical Books scattered across England. Their adventure begins here.

Three students battle sadistic professors, annoying roommates and evil conspiracies at a second-rate university for superheroes. A French comic with heavy stylistic influences from American comics and Japanese manga, and tons of pop culture references.

N/A

The story takes place after the failed Shimabara Rebellion, led by Shiro Amakusa as a Christian uprising against the Shogunate. It ended...brutally, and Amakusa himself was executed. However, dark forces are at work, and Amakusa returns from the grave...

A young man sits in the inner room of a library, diligently restoring old - but valuable - books to their former splendour. An enthusiastic, upbeat young police officer often comes to him for help with hard-to-solve cases...But what exactly is the mysterious skill that allows this man to unfailingly discover the truth lying in places that even the watchful eye of the Law has failed to penetrate?

A boy's terrifying dream that brings an end to a humanity that is rotting. A high school student named Gi Haru, who has an illness that prevents him from differentiating between reality and delusions. His only friends are his studious friend Kang Yul and girlfriend Kang Lee Ha. However one day, after seeing a hallucination of a Nazi assembly during his friend Kang Yul's poetry recitation, the school falls into a pandemonium of hell where everyone is killing each other, but Gi Haru believes it to be another one of his delusions. However, that was the blunt truth. That day, where the mass murder of the entire student body took place, (The starting day) Gi Haru kills his girlfriend Kang Lee Ha with his own hands, is betrayed by his one and only friend Kang Yul, and ends up losing both his eyes. Afterwards, he was detained in a mental institute as the culprit of massacring the entire student body, but after receiving help from the capable group of the Panthers he begins to chase after Kang Yul and begins the road of vengeance.

From Shi-ran:

Kasumi's day just keeps getting worse and worse. First he's dumped by a classmate, and then a strange fortune-teller shakes his world as he reveals himself to be in search of a master. And who could the lucky boy be...?

After his master Goomonryong destroys his ki-center, Shioon leaves the world of the Murim for a normal life to which he believes his master was trying to return him. But for a boy who holds the Phoenix medallion of the Sunwoo clan and the knowledge of the Black Heaven & Earth Technique, the world of the Murim will come to him... Continuation of The Breaker with new allies and enemies.

Manhwa you may like:
+ The Gamer
+ Gosu
+ Yongbi

Isei’s life crumbled right before his eyes as the one he fell in love with died. But when everything seems dark in his life something happens...

Once upon a time, there was a leak in the sky and the residents of the sky kingdom sneaked out to the human world. They were known as monsters and gods because they are totally different species. One day, five Ahrangs came to earth by God's will in order to send the sky people back to where they belong. After ever-lasting battles, the sky people were finally gone and never seen again by the world. However, it's rumoured that the legendary Ahrangs remained in the land still in search for sky people.