The spam-mail boom of the near future: The great advances of technology, a new generation of improved systems, and ideal computer programs have caused a backlash. The IT world has advanced significantly to the point where humanoid "Spam" mails are causing trouble for their humans. In the near future, hundreds of thousands of spammers have caused incalculable destruction to the mainframe of the lives of everyday citizens. Enter "SM" Hunters to save the humans from our own creations. Can "Spam" ever be good?

From Udon Entertainment:

The Grim Peddler waltzes through fairy tales, giving the stories' inhabitants their hearts' desires. But benefactors beware, for his gifts don't always turn out quite as expected! Classic fables like Sleeping Beauty, Hansel and Gretel, The Frog Prince and more are turned on their side through the unexpected reversals and terrifying twists of this all-new series.

Kugami Sugara just wants to lead a peaceful school life.
But being chosen by the beautiful and talented Shirasagi Yui to be her pseudo 'sister', her life is anything but peaceful.
And to make things even more interesting, Yui's cold but capable identical twin sister (and also student council president), Shirasagi Ui, also takes an interest in Sugara.

From there, things go as well as you might expect in this yuri comedy!

Author's Twitter: https://twitter.com/ndoromaru

From StarryHeaven:

I’m Anna. I’m 14 years old and I’ve just entered the ninth grade. Sou and Hinata, who live in the same apartment complex as me, are my childhood friends and we’re all the same age. I thought that from now on we’d become even closer friends, but then Sou suddenly did that to me…!!

This is an era full of aura, and a world where the immortals gather. The young Wu Fu returned from a reunion,and looking at his eyes, how calm he was. What I need to do is to raise the sword and clear all the enemies of the last

Haru-kun is a transfer student who moved into a new town with his mother. One day his mother suddenly turned into the same age as him.

Due to a misuse of a word joke on live TV broadcast, girl group otaku, 'Jin-Kyung' ended up becoming doxxed and labeled as a "child predator", and ended up getting Social Anxiety Disorder. 3 years later, because of his past incident from the 3D world, his love for only the 2D world manifested, and ended up becoming a "Shut-In Otaku"! Then one day, as Jin-Kyung was no-lifing as usual, he was summoned to ‘Another World’, and came face-to-face with a bright-eyed, hopeful Summoner… Interesting enough, in the world that Jin-Kyung was summoned to, his Social Anxiety Disorder disappeared, and he was also able to wield immense power, and became the strongest summoned being there ever was!! The story of a former girl group otaku turned powerful 2D otaku, and the story of a weak and feeble Summoner commences now!!!

A collection of short manga featuring the same two unnamed girls going out with each other.

When our hero, Matsubara Yuu, suddenly finds himself moving back to his mother’s home, a number of strange things happen to him. He meets Suzu, a beautiful girl who falls in love with him at once, even wanting to have his children. Even if he wanted to run away from the situation, his way was blocked by a huge cow attacking him. In fact, in all of these, he seems to be the cause… [translation from cover by rpapo]

A young Tetsuou watched a performance by Giovanni Bazonni and was inspired to become a master cellist. But he knows that living as he is in an out-of-the-way Japanese island means his musical aspirations are unlikely to be realised.

One day, a boy named Ikumi comes to stay at Tetsuou's place. Ikumi is the sole survivor of an accident at sea, wherein he saved himself by swimming out to Tetsuou's island.

But he makes a surprising claim: he says he found his way to safety by following the sound of beautiful cello music, and is convinced that the player was Tetsuou.

The demon leader Di Shi Tian was betrayed by his most trusted friend, and perished under the combined attack of the Five Sects. When the world thought they had vanquished the demons, Shi Tian is reborn as a student Mo Fan. Without his powers and abilities, and under the attack of the Five Sects, Di Shi Tian starts his journey of revenge.

Xiao Zheng was forced into signing a marriage and employment contract after a one night stand with the female executive of New Arcana Group.
During this time, he encountered many interesting female workers which he named them based on their unique characters…
Ice Goddess… Tyrannosaurus / Overlord Flower… Gentle Boss… Mischievous School Girl…

A righteous prosecutor, life reset, punish the villain!!!!
A hot-blooded prosecutor, kim hi wu, was murdered and sunk into the ocean while chasing the tyrant who controlled korea. But, Kim Hi Wu, meets a grim reaper who gives him a chance to relive and sends him back to when he was 18 years old. As a high schooler, kim hi wu, prepares to punish the tyrant Jo Tae Sup.
“To get the devil, you have to become one”

Due to the bad treatment that she received, Nishino Kanako quits her job, but when she finds a new one, Kanako didn't know that she will work in a Assassins Agency.

Makoto is a recluse (hikikomori) who gets summoned to another world. From the Goddess Liana, he's granted the "Truth Eye" aka "God's Eye". Makoto is now able to see various things, including the past and future, using this ability to live as an adventurer in a different world.

Nogami kei is a high school boy who writes novels online for fun. But one day, his secret was discovered by the famous rich girl in school, Houjou Urara...! On top of that, she blackmails him into writing a romance novel for her own enjoyment... but in reality, Houjou was just a fan of his work!? And things continue to get complicated because Houjou can't be honest with what she says, which causes misunderstandings...?

A sequel set after the ending of Gakkou Gurashi! which details the aftermath of the characters.

From: Easy Going Scans

In a world where only females are born with the ability to practice magic, Amel, a boy is born with the ability. In this world, he must conceal he is a male or he will be considered illegal. From the prestigious Espresso family, he/she must prove that only he/she is needed to capture the illicit escapees.

Ray and Trice grew up together in this post apocalyptic world. She was his only friend. But then one day...
An unwelcomed guest arrives and Says "Glory to Humans".

New enemies, new bugs and an even bigger island.