From Anime News Network:

Tatsumi Karasawa becomes the owner of host club "Shinijuku Sokai" in only two days. He leads a group of amateurs who aren't afraid of gangsters, police, or so-called "professional" organizations. Without fear, he walks the difficult path leading straight to the top.

University students shipwrecked and forced to board a deserted island with a serial killer.

The inside of the taboo door is shattered, or...

A spin-off centering on Lu Bu Fengxian.

The power I posses is the strongest in this world! The enemies I must defeat... are humans!?

I was Suddenly transported to another world. Being called the ‘Suitable One’, with the world’s strongest power “Holy Sword”. I thought I would be using that power to make a great impact in this new world. However, in this alternate world there are “inhumans”; Monsters that oppress the lands. Questioning my own convictions, I ask, is this correct? Who should I use this power for? This is the beginning of an Isekai battle fantasy!

In a city overflowing with heinous crimes and violence, two girls make it their job to kill criminals who can not be dealt with by police.

Ruu Brandel, a genius wizard with a talent for thousands of years. One day helped a beautiful aristocratic daughter, Franc and was to be assigned to “Magic Girls' Gakuen” where he acts as a teacher! Now, the “non-standard” teacher life by the strongest wizard opens!

(Source: MangaUpdates)

On that day, suddenly, every single male virgin over the age of 18 started dying rapidly, causing a huge panic across Japan! Sex industry prices skyrocket overnight, forming angry mobs of terrified virgins, and the government knows not how to handle such an unprecedented crisis.

Enter our protagonist, 17-year old virgin Kurumi Eiri. He has to get laid before his 18th birthday, or he'll die! He hurriedly confesses to girls, only to be shot down without any hope. Is there any way for him to graduate from virginity?! What will the virgins do when death is staring them in the face?!

The story begins with Yggdrasil, a popular online game which is quietly shut down on its last day. Our protagonist Momonga decided to stay until the last moment in his beloved game and wait for the force logout. Unexpectedly, the server did not shut down and Momonga is stuck in his skeleton body and got transferred to another world. "The powerful Overlord" needs now to discover a new world and face the continuous challenges.

Having no parents, friends, or place in society, this ordinary man strives to take over the new world the game has become.

Amagoe Homura, a high school student you can find anywhere, finds himself in a devastated version of Shibuya. A mysterious figure calling himself "Unknown" tells everyone that they can commit any crime in this world, and forces them to participate in a death game where they compete on who can commit the most severe crime...!

The maritime nation "Republic of Enetia" where the plague "black disease" has begun to spread. In this country, there was a "state affairs assassin" who executed a felony, commonly known as an assassin of justice.

During the political upheavals and social strife at the end of the Tokugawa Shogunate in Japan (1855), two parent-less brothers Yukimura Shoutarou and Yukimura Gentarou struggle to survive in these turbulent times. With their only possession being their deceased father's sword and clinging onto the wisdom of their mother's final words, the brothers seek to embark on the Path of the Warrior: Sidooh.

Rindo Kurosawa is a man who loves horror films and aims to become "king of cinema", the top of the filming world with horror films. One day, he receives a master tape from Robert Skye, a master of the horror film's world whom he deeply admires. However, this is the beginning of a strange fate for Rindo, as Skye's unfinished work "Axeman" appears from the recording...! In order to realize his ambition, Rindo throws himself into a deadly battle with the "Kinema" who lurk behind the scenes of the film industry...

A Hero is someone chosen by God to receive a supernatural 'gift'. A unique existence, only one Hero can exist at a time, with a new one being chosen upon the former's death.
This generation's Hero is an ordinary villager girl named Kyrie whose gift is merely being able to boil water.
When her family and friends are slaughtered, Kyrie is backed into a corner and learns the true value of that boiling hot power, and how well it could be used to fan the flames of revenge that burned inside of her.

After more than 2,000 years, Nomi no Sukune's successor is born. This time, Baki will challenge the god of sumo.

The action story revolves around battles over money between three woman: a "passionate psychedelic revenger" named Nami, a "china dress-wearing killing machine" named Je-Mao, and a female gang leader named Shinobu Aza.

From: Easy Going Scans:
Glory is won over the roar of cannon fire, and peacetime exists simply to prepare for the next battle.
A soldier in a militarily-advanced nation, Balzer had no problems gaining rank. However, his career takes a sudden turn when he's assigned as an adviser at a military school in a neighbouring allied nation. Struggling to manage with minimum military power at hand, inexperienced students to take care of, and civilian opposition against firearms to alleviate, will Major Balzer be able to win over the other soldiers, his charges and the civilians?

Shizuma Suzumori had a normal high school life until one day, a serial killer attacks the classroom.

Twenty-four countries are locked in a century-long war, all vying for control of the island of Wakoku. A young girl named Hinowa joins the army of the Soukai nation in order to end the war once and for all, but is killed in battle. Now her daughter Hinata, takes up her name and plans to finish what her mother started.

The human army lost the battle with the vampires on Higanjima. Unable to prevent Miyabi's plan, Japan has become a vampire country. Six months later, there was a one-armed man fighting the vampires in abandoned Japan! The man's name is Akira Miyamoto. A warrior who had already tasted hell on Higanjima.