From The Little Corner:

It is the year 2100 A.D., and humans have developed a virtual reality game with a realism level of 99%. Feng Lan, due to a bet with her twin brother, vows to succeed in playing the game without using her "female benefits." Due to this, she becomes the first and only female to play as a male character in "Second Life." As her infamy rises as a bloodthirsty warrior, can she keep her identity a secret from her real life acquaintances whom she has beaten up?

Original Webcomic

From the creator of Danganronpa comes a series that focuses on Guren High, a place where all the biggest and baddest delinquents hang out, so it's the perfect place to recruit some of Earth's mightiest warriors to fight off an alien invasion, right? There seems to be a misunderstanding, though; they're only the heroes in delinquent manga, and that's where recruiter Harmony learned everything she knows about Earth!

Main character design by KODAMA Yuuki.

August 2019, scientists received extraterrestrial signals warning them of the catastrophes that will hit Earth. Following it, various extraterrestrial life forms come into contact with the human species. People who are affected by these energies, called the Third Eye, develop mysterious powers. Some are able to move at the speed of sound, others possess a sword that is capable of even cutting steel, or those who are able to tear absolutely everything apart with their teeth.

We follow the daily life of Utsugi Minoru, a discreet 17-year-old teenager who obtained the ability he has always desired, the Solitude (code name lsolator), and Yumiko, a member of an organization that monitors these new superhumans. The prowess given by Absolute Solitude results in endless battles for Minoru.

It's New Year's Eve, and there's a countdown party at the luxury hotel, Babel. Kouta, a new hotel employee who's dissatisfied with his own status quo, finds his fate forever changed following an encounter with two mysterious guests: Ozaki and Naomi.

On New Year's Day, he bears witness to a world-changing event. And with The Babel as his stage, navigating a complex web of human relations, Kouta's mission begins!

Ameto tells the saga about a young prince who is destined to save his people from the clutches of the fearsome villain Valxer. The story is filled with action, drama, science, metal heroes, and more.

Of Doraemon fame, Fujiko F Fujio asks what the world would be like if super powers belonged to a less-than-ideal superhero, Kuraku Kento.

A deadly android was delivered to me on my birthday!.. 
This is a Manhwa by Songa Min. Set in the near future, follows the life of Nano, a classified Android.

"One such setting is the "Nine Schools Battles", officially called The National Magic High School Good Will Magic Competition. Every year, the best Magic High School students gather together, unfolding a story of frustration and glory by putting their young pride on the line."

(Adaption of Light Novel v03-v04)

From MangaHelpers:
Haruki is a teenage boy who has two friends that are not very ordinary. Ayana has been transformed to be part dog, as shown by her dog ears and tail. Ayana also has enormous lactating breasts. Airi, on the other hand, is a cyborg girl, and she's got tons of mechanical gadgets. The story begins when Ayana and Airi both want Haruki to join their club, and Haruki must pick one over the other. Ayana's science club has more to do with transforming living things, whereas Airi's has to do with more mechanical science. Their attempts to persuade Haruki to their side tend to be full of nudity and sexual arousal. Haruki is going to have a bizarre school life.

Kinnikuman (Muscleman), a weak and clumsy super hero, constantly getting into wacky situations. As the series progressed, the story began changing from comedy to action as Kinnikuman battles stronger and stronger foes in the wrestling ring. The series continually introduced new Super Human characters, known as Chyo-jins, who would challenge Kinnikuman and his friends for various purposes.

Note: Received the Shogakukan Manga Award for shōnen manga in 1985.

The original run was from 1979-1986 and ended with Vol. 36. The series directly continued in 2010.

Shirasaki is incredibly bored by his unchanging daily school life and he ends up falling for his weird classmate Kamimura Yuuka, who rants about changing the world to his uninterested classmates. However, when she reveals the truth about the nature of their world to him, everything will quickly become stranger than he would ever have expected!

A manga adaptation of the popular game, Hollow Realization takes place in the VRMMORPG game Sword Art: Origin and sees Kirito and friends traversing the land of Ainground, a rebuild of Aincrad, when they meet a mysterious NPC girl named Premiere who hasn’t been coded into the game. Vowing to protect her, they search to uncover the truth of her null coding while also contending with players who want to erase her existence from the game.

Planet Earth is facing a grave crisis due to global warming and housing and food shortages. What steps can humankind take to counteract these issues while it's practically demolishing itself to survive? Ie suddenly finds himself on the path to discovery, but...

From MangaHelpers: The Comp is a popular portable game system that also functions as a smartphone. But it suddenly becomes a portal for demons to travel to the human world! Kazuya receives three Comps, from his master programmer cousin Naoya, for himself and his two friends Atsuro and Yuzu. In order to survive the demon invasion, the trio have to use the Comps to summon and subdue the demon that appears in order to fight back against the waves of demons that are about to swarm Japan! [vyc]

Welcome to The World, the most advanced online game ever created. Fourteen-year-old twins Rena and Shugo are two middle-school students who enter The World as level-one game characters--and now they're ready to take on anything...or so they think. When Shugo's character dies, he is transported to another level where he is entrusted to bear the Twilight Bracelet by the mysterious Aura. Shugo must find out who Aura is and why she gave him this powerful weapon to protect his sister from the dangers in The World.

One day a junior high school sophomore student Kuro-chan, discovers aliens coming out of her closet! Now, it's up to her to regulate these migrant aliens!

Today, the city--tomorrow, the world! That's the plan of Il Palazzo, the haughty, pretty-boy leader of ACROSS, a secret society based somewhere deep beneath the streets and sewers of Fukuoka, Japan. It's a good thing he's starting small, because ACROSS begins its bid for global domination with just two members--Il Palazzo and Excel, the teenager girl smitten with him. After setting up house in a cheap apartment, Il Palazzo explains that the budget for world conquest and the budget for room and board must regrettably be kept separate. Their neighbors are a trio of regular guys, whom they hope will all overlook the irregularities of their comings and goings; not to mention the sound of screams, struggles, and gasoline explosions!

Ao, Fleur and Elena start living together in the Fukai House, in Okinawa, along with Noah and Naru, who lost her house when a Secret attacked the island.

People are having the serious issue with the global warming in 2014, but what if unknown gigantic insects appear in the city because of pollutants are above the average? Now, here is the last human-being (main character) tries to escape from the danger and tries to find a way to save the city.