Official Shinymas manga by Akira Shinozaki as presented on Comic Newtype.
THE iDOLM@STER is owned by BANDAI NAMCO Entertainment.

Synopsis:
Let's spread our wings and fly to the shiny stage of tomorrow!

This is a story about the idols of 283 (read "Tsubasa") Production and their pursuit of greater heights through cooperation and competition. Their goal? To win first place in "W.I.N.G.", the gateway to stardom for new and upcoming idols!!

THE iDOLM@STER: Shiny Colors Official Website: https://shinycolors.idolmaster.jp/

Official 4koma for the browser game THE iDOLM@STER: Shiny Colors.

“The Hero defeated the Demon King in the war of men against demons…” Those kinds of stories are a thing of the past. Nowadays, adventurers, demons, Heroes, Demon Kings, and so on are all occupations that no longer involve putting one’s life on the line. Peace has returned to the world, and dungeon exploration has now become a form of entertainment. Adventurers and monsters now all fight using clones they’ve created with magic in an extremely popular form of dungeon clearing where nobody dies. The footage of the dungeon getting cleared gets broadcasted all across the continent, and I’m a member of a Hero’s party that was ranked the 4th most popular in the world… but not anymore. Parties had a limitation of 5 members, and I was told that an unpopular job like Black Sorcerer would only get in the way of getting to 3rd place or beyond.

Now that I became unemployed, I was forced to find another party but I just couldn’t find one. One day, I encountered a beautiful blonde red-eyed woman who told me she had a job for me. After being so touched from having someone recognize my abilities far more than my past comrades, I ended up agreeing to take an interview without asking for the details. When I arrived at my destination, I was at the world’s hardest dungeon where no party has ever reached the final area, the Demon King Castle, where the Big Four and the Demon King were waiting for me. This is the story of a Black Sorcerer that was kicked out of a Hero’s party and joined the side of the Demon King Army to repel the Heroes. (Source: Novelupdates)

Or
Please read the title again.

Artist's Twitter (NSFW): https://twitter.com/kana_kkn
Orignal webnovel: https://ncode.syosetu.com/n4836fm/

In a world where humans sell and buy otherworldly species as slaves, the great mage Rifenhardt is treated like the Demon King for helping the otherworldly species.

A party of heroes arrive to bring down the Demon King! Rifenhardt succeeds in greatly injuring the heroes, but he faces death at the hands of... the Martial King Tesslon!

"Time and Space Regression Spell."

However, Rifenhardt miraculously manages to cast this last-resort spell and regresses to the past. But...

“Who are you?”

He awakens reincarnated in the body of the continent’s strongest physical warrior, Tesslon!

Now begins Rifenhardt's adventures as both a great mage and the physically strongest man to change the world!

Takezou, wearing rose perfumes belonging to his brother's wife, sneaks into Shinobu's bedroom. Invisible for Shinobu he caresses his brother's body.

The story of Shinobu and his stepbrother Takezou's adulthood.

Volume 1 includes:
- Lure of Aroma (香りの誘惑) ch2: The story of Shinobu and his stepbrother Takezou's childhood.
- Impurity (汚れ): extra story, an episode of Shinobu's and his stepbrother Takezou's school years.

Volume 2 includes:
- Anten (暗転): extra story involving Shinobu's son, Kaname.

In the Elgrand Kingdom, a certain earl’s daughter was well-known. Captivating men and women of all ages with her beautiful looks, she did as she pleased. To those who defied her, she had no forgiveness, crushing them thoroughly, and she caused misfortune for multitudes of people simply for her amusement. Beautiful and cruel, with sharp thorns, she was the “Rose of Ice.”

“Um, who is that story about?”

This is the story of an earl’s daughter, who will have everything she has to do explained the day after tomorrow, and who, after all sorts of troubles, tries to somehow attain happiness in the battlefield of women called the inner palace.

Note: Adapted from the first "villainess" WN, published in 2012.

In a country that rejects magic, Mueller. Kate was working as a maid in the countryside. One day, a suspicious servant comes in to Dale M, the artist she works for...

Im Hwapyung. A man who wants to live a normal life like his name. Everything he had in his mundane life was destroyed. [Your love has become my loathing.] You shouldn’t have messed with me in the first place. You should have just let me live a quiet life. And now he has began his move that none of his nemesis will survive his wrath.

Maria discovers her invisibility powers when she is 5 years old, but there's a catch – whenever she feels calm or depressed, she starts turning invisible against her will. The only way to turn back or stay visible is to make sure she has heart throbbing doki doki thoughts available at a moment's notice.

What better way to keep her heart throbbing than to hide in her handsome senpai's house, naked and invisible, and watch his most private moments?

A new scifi work with a slightly(?) hentai heroine by the same artist that brought us Midori no Hibi and Mahou no Iroha!

The summer break is over and a new term begins, with it the time to decide on the new Student Council President starts.

Zhou Gongjin who was the mastermind of what happened in the “Parasite Doll” incident of “Nine Schools Competition” has fled from Yokohama, to the area of the original ancient magic users group centered around Kyoto also known as the “traditionalists”. Since then two months have passed — The “National High School Magic Thesis Competition” will soon be held. This year's Thesis Competition is being held in Kyoto sponsored by the Magic Association and in their conference hall. Tatsuya gets visited by the Kuroba twins who as representatives bring Yotsuba Maya's letter to him. The letter is a request from his aunt saying — “hope your cooperation to capture Zhou Gongjin”.
While it is questionable that whether it is a “command” rather than a “request”, Tatsuya and Miyuki go to Kudou's house as they are in the center as opponents of the “traditionalists”. So, two siblings have an encounter of the fate with the “Genius Augmented Magician”. Conspiracy of the ancient city was the stage. The fate that has continued to smolder away in the back of the history of magician development, Tatsuya and Miyuki and his companions are challenged.

Adaption of Light Novel Volumes 14-15.

In July 2096, the summer event of the year for the national magic high school competition, known as the Nine Schools Competition will be held. However the rules for this Nine Schools Competition are different from previous years.
One month before the Nine Schools Competition, significant changes in the rules and events were made which forced each of the national magic high schools to be busy up until the day of the competition.
While Tatsuya is planning for the next Nine Schools Competition, an anonymous message is delivered. The message contains information that a new plot will occur during the Nine Schools Competition.
While the competition is happening, Tatsuya runs through the dark forests of Fuji, in order to oppose the conspiracy of betrayal.
The 2nd Year of the Nine Schools Competition has begun.

*Notes:
Adaptation of the original novel's volume 13.

The seasons have changed and it will soon be the second spring. Tatsuya and Miyuki have finished their first year at First Magic High School and are on their spring break. The two go to their villa on the Ogasawara Island archipelago. After only a small moment of peace a lone young woman named Kokoa appears before them. She has abandoned the Naval base and she tells Tatsuya her one wish.

A Manga adaptation of the Light Novel "The Irregular of the Royal Academy of Magic", serialized in Weekly Young Jump.

"Magic." A sacred mystery usable only by those chosen. One day, a child from the slums named Ars finds he has the power to use magic. A sorcerer by the name of Genos Wilzard learns of his talent and raises him, turning him into the greatest of assassins. One day, Genos gives him an order: To enroll at the Magic Academy...!?

A discharged, and spiritually spent, soldier decided to shut himself to a small marine research isle. He was enjoying his solitary life as usual when he saw a nuclear explosion in direction of Seoul, Korea.His nightmare returns.

You can't leave this island until you've killed 100 people. The most deadly survival game begins on a solitary island where desires swirl and only the strongest survive!

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.

Follow the adventures of our sexy redhead zombie-hunting badass heroine!

A short gag web-manga, by Sabai

Raws: http://dot381.web.fc2.com/nin/index.html