From MangaHelpers:
In this world, there exists individuals known as "Majin": supernatural beings able to wield unique powers. They live among the normal human beings, but the divide created between the Majin and the normal human race is severe. There exists a school known as Dangerous, where the population ratio of Majin students exceeds that of any other high school. In this school, two groups known as the "Banchou Group" and the "Seitokai" face each other in war, but they have created a balance of power, resulting in a temporary peace. Now, with the inclusion of new students, this balance of power is about to collapse. One of the "normal" students, Ryouseiin Otome is forced to choose sides before the beginning of Armageddon.

Isamu doesn't stand out, and everyone calls him a "side character" behind his back. Even his passion for running doesn't get him anywhere on the track team, so he spends his nights languishing at a low-paying part-time job. It feels like everything he's holding in is going to boil over, but when people start getting infected with a mysterious illness that turns them into monsters when sexually aroused, he will have to learn how to control the urges he has pent up inside in order to survive.

The internet is full of rumors about the Neet and Hikikomori genius gamer siblings Sora and Shiro. The two go as far as to refer to the world as a "shit game", but then one day a young man calling himself "God" summons them to a parallel universe. There, God has forbidden war, and "everything is to be settled with games". Yes, even the national borders. Driven into a corner by other species, the 'human species' is down to its last city. Can Sora and Shiro, these related failures of society, become the saviors of humankind in this parallel world?

How do you kill a target that can't die?

Even worse, how can you possibly kill said target if they give you food, clothes and a hot shower?

Will Miss Killer be able to kill the mafia boss Leonard Amaretto? On top of that... will she be willing to, even when the old man asks her to do so after receiving the kindness he dispenses her?

The series set in a fictional world that believes in reincarnation of the soul. If someone accomplished great things in their previous life, the society expects that person to also be very successful in their current life. On the other hand, if one commits a great sin and is punished with a large prison sentence that far exceeds the life expectancy of that individual, he is forced to continue serving that sentence in his next life.

This is a story of Haro Ahinsa and his reincarnations, that have been sentenced to 339 years of penal servitude for the his sin.

Three centuries ago, a vampire by the name of Migiri was running a reign of terror across Japan when a hero named Naonosuke Kobayashi cut off his head and sent him to eternal rest... until now.

Fuuto Detective (風都探偵 Fūto Tantei) is a manga adaptation and sequel of the 2009 series Kamen Rider W which will be published in Weekly Big Comic Spirits. Written by Riku Sanjo (W, Fourze, Drive) and drawn by Masaki Sato. The Dopants in this manga are designed by Katsuya Terada and supervised by Hideaki Tsukada.

The only human student at an all-girl school is on a mission to sexually harass each of the monster girls.

In front of the shy, book-loving Naomi Katagaki, one day appeared ‘his future self’, NAOMI KATAGAKI. His goal was to make Naomi his classmate’s, Ruri Ichigyou’s, boyfriend, and rewrite the tragic fate of Ruri...

However!
Starting from the next page, it’s a spin-off manga about a possible ‘world’!!
Some characters may be a bit different, so don’t worry about reading it!!

The story follows an average, albeit untidy guy named Hajime Tsukiyoda. Hajime's peaceful everyday life comes to an end when a man-eating goldfish overtake Shibuya. The fish are everywhere, filling the famous scramble crossing, hanging near the Hachiko statue, and even floating through the city center all the while eating as many humans as they can. The unprecedented crisis marks the "worst survival competition in history."

Rui Yotsubaki, a famous illusionist, is an outspoken and intractable person. Sumire Shirohara is a policewoman with superhuman strength that will leave you with opened mouth. Fortunately or not, the meeting of resembling fire and water duo results in solving difficult cases thanks to Rui's ability to "feel the five senses of the dead"!

Tokyo, Planet Earth... High schooler Tatsumi Tatsunami lost his parents at a young age and now works multiple part-time jobs to live a hectic but peaceful life with his younger siblings. One day his body undergoes a sudden change... And now mysterious beings are showing up at his house! In order to protect the people he holds dear, in order to protect Earth (or "area"), Tatsumi must awaken! He better, because "they" are already here!

Humans are under threat from mysterious monsters called mononoke. Dora Sasaki is unbeatable in a fight, and in order to keep a promise to his deceased mother, he aspires to be an anti-mononoke samurai. However, everything changes when he meets a kind-hearted mononoke named Kusanagi. Welcome to this dark fantasy story of humans and monsters!

What would you do if you had a smartphone that let you look up anything? Secret documents, security camera footage, a certain person's text messages, where people dropped money... This smartphone lets you do the impossible! Jump's newest suspense thriller begins!

Two brothers, Noboru and Toru grew away from the fact that their family could use the Water ki to keep demons away. However, in order to keep Toru safe after a demon goes after his life, they will need to awaken the fox deity Kuugen.

Tsukumo Sayo made a promise with a child demon when she was 5 years old. Now, 10 years later, that demon is tired of waiting her and suddenly he appears in front of Sayo to fullfil that promise? "I'll definitely make you fall in love with me". Well now, which side will fall first?

Murasaki has the power to see the future of the person she touches. As the landlord's daughter, she has to chase after Shijima Banri for rent every month. Every time, the poor author Shijima promises her that he'll pay rent as soon as he gets published and gets paid. Murasaki quietly supports his work, because she can see that Shijima is the person she is fated to marry.

Yu Ni, a man with a few screws loose, bought a husky and embarked on a journey of killing monsters in mainland China, in order to find and retrieve his own perception and abilities. The talented great chef, beautiful young lady, Wuzai incidentally tasted monster's meat and was greatly amazed at it afterward. She was determined to create a cookbook heirloom based on monsters. Then, the group went on the incredible killing monsters and making culinary adventures together!

Ye Ming, the rising star of Family Ye is regarded as a genius among his peer cultivators. But he was schemed by his jealous cousin and the latter cut his meridians, crippled his abilities and hamstrung him ruthlessly. But Ye Ming never gives up because he'd sacrifice everything for take revenge for his deceased parents who were murdered by Family Huang. But he doesn't know that he is considered a pain in the neck to Family Ye and a big conspiracy is looming out of the darkness...

From Echochi Scans:

Two families are tied together by a curse. Every 100 years, one person from each family must share the same fate for exactly one year. The pair will be subjected to 12 misfortunes where one will get hurt while the other must sustain their injuries in return.

When Kagura Ikumi was 7, his parents died in an accident. Since then, he has been living an ordinary life. Until the day of his 17th birthday where he meets a mysterious transfer student, Ichijyou Chihaya. However, this fateful encounter between them is only the start of their intertwined fate. For the next year, the two of them will be forced to face 12 misfortunes on the 13th of every month, a curse that has never left any previous pair alive.