An unknowing Sudou Kaname is invited to try out a new mysterious mobile app game called "Darwin's Game", but later realizes that he's in for more than he's bargained for when he finds out that there's no way to "quit" the game.

Free Life Fantasy Online… a.k.a. FLFO.
Tsukishiro Kotone receives this game as gift from her little sister and starts playing.
The character’s race she has selected was… one of “Inhuman” races for enthusiasts.
A race said to be bad even among Inhuman races that are known to be difficult – a Zombie.

Big Tiddies Onee-san playing Dark Soul VRMMO as Undead Princess.

Our protagonist is a college student who enjoys playing as the evil-aligned faction Arachnea in her favorite real-time strategy game. One day, she finds herself in a world similar to the one in the game; additionally, her body is now that of a fourteen-year-old girl. While things are a bit different from how they were in the game, one element has remained the same: she is the leader of the Arachnea. The insects under her control, collectively known as the Swarm, praise her and implore her to lead them to victory. In order to survive, she raises her Swarm and forms friendly relations with the elves of the neighboring forest. But after a slaver traveling through the forest murders one of her Swarm and the nearby kingdom's knights burn down the elven village and massacre its people, she prepares to launch her counterattacks in the name of revenge. However, revenge is merely a pretense for attacking the countries of this world. Her command is masterful and severe, as one who has played the game in real life... (Source: J-Novel Club)

Official English Translation of Novel: https://j-novel.club/v/her-majesty-s-swarm-volume-1/

A story about a criminal who was sentenced to “Eternal Punishment”. The main character, Touma Kuga, was aiming to take medical school entrance exams, having heard that his classmate, Satou Rin, whom he is in love with, said that if she were to marry someone, it would be a doctor. By chance, Kuga is able to go on a date with Satou, touring universities, but the two get involved in a certain incident…

When he woke up, Souma Tetsujirou, a samurai from Kamakura who had survived the Mongolian invasion, found himself in an unfamiliar place.

He was told by Hrist, the girl who brought him there, that they were in Valhalla, a place where the souls of dead warriors congregate. In order for him to be revived, Tetsujirou now has no choice but to fight against the "dead warriors" from different eras in this mythical place of carnage that he's been thrown into.

This is the start of a samurai drama where one has to fight and strike down their enemies, even if it kills them!!

Jyashin-chan Dropkick is a violent slapstick comedy about a delusional gothic lolita, Yurine, who summons a demon girl with the tail of a cobra, Jyashin-chan.

They'll have to live together -- until Yurine finds a way to send Jyashin-chan back to hell, or until Jyashin-chan kills Yurine.

Chaerin leads a blissful and comfortable life as the lead in a romance novel. She only has eyes for the male lead, Jeha, to the point where all the extras are literal black shadows.

But then, one day, her story suddenly switches genres.

All of a sudden, she discovers that if she wants to live, she has to band together with the extras she ignored before and work with them to survive!

From the author of comes this genre-defying tale!

On that day, humanity was turned into “prey”―.
Gen is a high school student living on the island of Tsushima, a door to mainland Japan.
Along with his sickly sister, Misaki, and his heartwarming mother, Gen was living a peaceful life, all until an “asymmetrical monster” appears on the island.

All hell breaks loose on the island of Tsushima.

These monsters devour everything from plants to animals, to humans, and mutate together.
Will humanity stand a chance against these mutant creatures?
Is there any hope?

Kenichi Tachibana from Terra Formars illustrates yet another crazy Sci-Fi survival series!!!

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...

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...