A spinoff of Ore no Imouto ga Konnani Kawaii Wake ga Nai following Kuroneko's route. This manga is a new story based on volume 15 and 16 of the Oreimo lightnovel written by the original author Tsukasa Fushimi. Not to be confused with Ore no Kouhai ga Konna ni Kawaii Wake ga Nai, which is another spinoff.

A salaryman gets a catgirl visitor from another world, and bullies her with his culinary skills.

“Awaken a New Self”. Lee Oh Reum is a high schooler who plays as a “Healer Shuttle” character in the kinesthetic VR MMORPG game .
One day, his sub character “Avenger” that he was secretly raising becomes the best.
Will Lee Oh Reum be able to overcome all dangers like constantly appearing monsters and various quests to become his new self? An authentic action altermodern drama fantasy.

Tougo is a high school student who loves drawing more than anything. One day, he woke up in a deep forest filled with vegetations he had never seen before...
While he went on an exploration finding answers in this new world, he found them without putting much effort.
When he drew a Mochi using pencil and paper, something unusual happened...!?
Not just a log house but legendary beasts too!?
With ability to bring anything into being, he creates a paradise for everyone!
A young boy who unbeknown to him is loved by others.

The drawing fantasy story starts here!

The high school student Kurashiki Midsummer has one of the best kendo skills in Japan, but she is not good at studying. Together with Tsumugi, an insect video distributor, and Ayano, an urban legend and conspiracy theorist, it was midsummer to receive repair from the first day of summer vacation, but at that time, a Self-Defense Force helicopter landed in the schoolyard. This was the beginning of the summer vacation which is super dangerous and too hot for midsummer!

The Arisaka sisters (Hatsune and Kazuki) and the Kagura siblings (Yuuji and Marie) lived next door when they were smaller. So close that they could climb onto each other's verandas from the 2nd floor. They would always play together until one day the Kagura siblings had to move.
It's been 10 years and the Kagura siblings are moving back! Yuuji's turned into a pervert and Marie isn't the crybaby she used to be?

Furutto is a cat that leads a double life. On one hand, he's the companion of a young woman in an apartment building named Kujirai, who feeds him (when she hasn't gambled away her meager manga-assistant's paycheck) and spends time with him in her apartment. On the other hand, he wants to keep his street cred as a stray cat and spends a good amount of time hanging out with the other strays, trying to steal food out of trash cans and rumbling with the cats from the next town over.

The "slapstick daily-life story" Azur Lane Queen's Orders will center around the tsundere Queen Elizabeth and her school friend Warspite (the "Grand Old Lady").

The protagonist, Masaru, has just inherited a big fortune after the death of his father. However, people are trying to get their hands on it by any means necessary, even if it means killing him. Narumi helped Masaru from being kidnapped after fighting some weird guys. He found out that they're not humans but wooden puppets with amazing strength. After a hard fight, Narumi was forced to admit that he's no opponent for them; and just when he started to think that Masaru would be captured, Shirogane, Masaru's watcher arrives from France with a weapon, the puppet Arlequin. Here, begins the story of Karakuri Circus.

This is a story of a 29-years-old bachelor who was brought to a different world to live freely. Caught by an “unwanted” wife from day one, his life is not going so smoothly when the entire country focuses its attention on him in ten days. Without losing to such an obstacle (?), he will continue to live on.

From DrCoke at MangaHelpers:
He has never been the type to stand out in the class. Kurihara Yuzuru has lived life by avoiding entering the lives of others, staying to himself. The story begins where he has to go to a whole new school, which means new classmates. He lacks any confidence to make new friends, so the fear of rejection drives him into a wish he never thought he would make. This single wish leads to a first day of class he would never forget. Yuzuru will have to make choices that will significantly alter others' lives, choices he could never make in the past.

Hiromichi Satou has been single his whole life, but, he recently got a girlfriend named Saikawa Haruka, and they have been dating for a month. His father remarries, and he gets a new step-sister Saikawa Shigure, the identical twin of Haruka.

Sato and Shigure agree to keep their step-sibling relationship a secret from everyone, and Haruka. How will the story unfold?

Sho and his friend, Tetsuro, stumble upon a strange orb-like mechanism, the Guyver Unit, in the woods. It physically bonds with Sho and turns him into the alien soldier, Guyver. His mission is to protect the Guyver Unit from the Japanese corporation known as Chronos. They are after it and two other units just like it. To retrieve the object, they send out vicious monsters known as Zoanoids. So no one is safe in Sho's life; not even himself.

The story is set in a Japan that is ravaged by plague-like rust, and details the journey of the strongest mushroom hunter Bisco Akaboshi and young doctor Milo Nekoyanagi and their search for the legendary medicinal mushroom “Sabikui”, believed to be the cure for the rust.

Wimpy Sena Kobayakawa has been running away from bullies all his life. But when the football gear comes on, things change--Sena's speed and uncanny ability to elude big bullies just might give him what it takes to become a great high school football hero! Enjoy all the bone-crushing action and slapstick comedy that this heartwarming coming-of-age story has to offer.

From Population GO:
The manga adaptation of Gundam 0083. Years after the One Year War ended, in hopes of resurrecting the Principality of Zeon forces, Anavel Gato (also known as the "Nightmare of Solomon") steals a Gundam Unit 02 from the Earth Federation Forces. In the heat of battle Kou Uraki enters Unit 01 to confront Gato.

An invincible brother who's willing to do anything for his little sister.

One day a young warrior girl meets a dwarf who dedicates himself to constructing houses for monsters. A tale of building houses for myriads of creatures begins! After all, everyone needs a home.

In 1988 an enigmatic explosion which has happened in Venezuela caused some mysterious case called "Lost Life Phenomenon". Indiscriminate murder, mass destruction, vanishing of an entire city... Some who got involved in the case say they saw a giant... Fast forward to 1991 in Japan. This is a story about girls who end up piloting gigantic humanoid weapons called "JINKI" fighting against their fate.

This manga started out in 2002 and had 9 volumes published, the "Complete Edition" came out in 2011 and had 3 'large' volumes instead, JUM will be doing the latter.

The last thing she can remember is her life support beginning to fail. Her body had suffered terribly after a fateful accident and the only freedom left in her life came from the VR world of Leadale. Now she finds herself in a country very similar to Leadale and 200 years have passed.