Accel Granz, the strongest dragon knight of them all has switched his job to become a beginner carrier. Relieved that he can finally take off his legendary dragon knight's helmet and escape the responsibilities of an elite S-class worker, Accel eagerly starts his new, low-class job!

Listen up folks! I’m living my life with the demon queen!

The story will center on two junior high school girls who first met in elementary school. They do not get along or like each other whatsoever. Despite that, a bond strangely develops between them.

Author twitter: https://twitter.com/towa_oshima

I was cursed to become a woman in place of the prince, and then he proposed to me?! My best friend from childhood, the high-spec Prince Vincent, and me, his follower Renoa. Though I've always been a loyal yes-man… Even if you're taking responsibility for me, I can't accept that proposal! The infatuating love story between a troublesome prince and his scapegoat attendant!
Original Web Novel: https://ncode.syosetu.com/n1090ff/

"Let's have fun together in the Railway Club!"
Tenman Sora has fallen in an unrequited love for the Railway Club's Mahiro-sensei!
"No matter how thorny the trains may be, if it's for Sensei, just bring it on..."
The pinnacle of heart-throbbing excitement☆ We sincerely invite you on a tingly girls-exclusive railway journey!

Meguru Kaku is a normal high school student, except for the dreams he has about his previous life. One day, an unseasonal new student, Kotaro Kongochi, arrives. He is reunited with a friend from his previous life that he thought he would never meet, but something is wrong with him...?

A man is trapped in a loveless marriage. But as he is on verge of death, he suddenly experiences the medical phenomenon of a so-called "gender change". Reborn as a woman, his wife becomes his life coach.

The series ran in Weekly Shōnen Jump from 1988 to 1990 as Jungle King Tar-chan, and then from 1990 to 1995 as New Jungle King Tar-chan. It first appeared as a short prototype story in the 1986 Autumn Special as Tar-san (ターサン?).

At first, the series was a simple gag manga parodying Tarzan with single chapter adventures. At this time most chapters were only 7 pages in length and were usually about Tar-chan protecting the peace of the jungle, Jane, and his animal friends, often with comedic results. After Tar-chan began, Super Jump became a monthly publication, and Tokuhiro ended Ken-chan and Chako-chan in 1990.

Two years into serialization, the stories began to run 13-15 pages, New was added to the title, and the simple episodic gag premise were switched to a fighting manga premise. Although long battles and emotional development began to unfold, after the end of these battles, the series would return to its gag style, switching back to the fighting manga style with each new battle.

Although the story is called Jungle King Tar-chan, Tar-chan and his friends actually live on a savanna, and a jungle setting is never actually used.

A teacher is looking for a school by the name of Seishou Academy, as he is a new transfer teacher for that school. Seishou Academy is known for having students with excellent marksmanship. However, he gets lost along the way and decides to look for someone who knows where the school is at a summer festival. He encounters a girl at a shooting range and finds her marksmanship skills to be professional. The girl tells the new teacher that she is an assault rifle, not a student. Her name is FNC and is an assault rifle of Seishou Academy. The new teacher attends school the next day to find students, including FNC, practicing shooting M16s and realizes that he has come to an unbelievable school. How will his experience be at Seishou Academy?

A woman gets hit by a truck and gets sent to the world of an otome game that she had played earlier that same day. However, instead of reincarnating into the main character and focus of the harem, she is fused into the soul of the game's antagonist, the protagonist's rival, and recalled this at the moment she is about to be sentenced to a "bad ending:" isolation in a nunnery.

It’s about a guy who was fired from being a court wizard, so he became a rural magical teacher instead.

Although he's tall and athletically gifted, Oga Masamichi is a boy best known for being a huge scaredy-cat. And recently, there's something that's got him even more on edge than usual... And that's him being haunted by what he's sure is the ghost of a girl who committed suicide at the school long ago, and still stalks its halls!

But, the truth is, the girl that Oga has been swearing up and down is a ghost that's out to get him is actually Sayama Umeko, a sweet and pure girl who is totally in love with him.

It was surely not love, but it was definitely love. One day, high school student Seiya Maki fell in love at first sight with a bad-looking lunch box prepared by the most beautiful girl in her class, Arisa Asahina. "I want to eat your lunch, so I want you to go out with me". Arisa feels ridiculed by his confession and angrily rejects Seiya, but she is gradually drawn to his unabashed innocence and the kindness with which he accompanies her through her troubles. However, one day Arisa discovers Seiya's secret that he can't tell anyone... Where will their relationship go, and why is Seiya attracted to Arisa's bento? Sad, bitter, loving and beautiful. A coming-of-age story.

7 years ago a strange disaster occurred in the 24th ward when laws of reality were distorted in that area. Our main character is a high school boy who lost his little brother. Can Hanako-san from his school help him find his sibling again?

But more importantly who is this Hanako-san of the 24th ward?

Awakening her dormant abilities as a devil one day, Yuuko Yoshida aka Shadow Mistress Yuuko, is entrusted with the mission to defeat the Light clan's shrine maiden, a magical girl, by her ancestor Lilith. Yuuko meets magical girl Momo Chiyoda through her classmate Anri Sada, and challenges her to a duel, but loses quickly due to her lack of strength.

Since then, Yuuko has struggled with her role as a devil and her duel with Momo, and borrowed help from her regularly. However, by a strange coincidence, Yuuko also weakens Momo by taking away her power to cooperate in protecting the peace of Tama city.

The overly serious Shimizu Azusa who is part of the public morals committee of her school suddenly inherits her father's store after his death. To her surprise it is not a simple bookstore but a sex store..! How will this highly disciplined but totally inexperienced girl manage to keep the business going?

In modern Hokkaido a brown bear has appeared near an elementary school, so a member of the local hunters' association is dispatched to exterminate it. However he gets killed by the bear and wakes up in a fantasy world, armed with only the Remington M870 shotgun he had when he died.

Between a recent move to Tokyo and the first day of high school, Rei starts his day filled with anxiety and insecurity. His nervousness accompanies him to the classroom, where amidst the classroom chatter, Rei is suddenly struck with a strange dream, followed by an aching in his chest.

Once he wakes up, Rei is greeted by a small creature standing on his desk. Passing it off as part of his dream, Rei heads home. However, to his surprise, numerous other strange creatures of all shapes and sizes roam the streets, seemingly invisible to everyone else.

With countless questions and the small creature from before trailing behind him, Rei's life is changed forever when he encounters a tall one-eyed figure, dressed in all black, smiling at him.

“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/

On her 12th birthday, Angele is infected with the strange and fatal disease that causes feathers to sprout from the body. She is sent to a solitary institution to be quarantined where she meets a man named Hakana and the wheels of fate begin to turn. (Source: Mangaupdates)
Based on the free game from Niconico.
Play the game in Japanese: https://game.nicovideo.jp/atsumaru/games/gm4581
Watch a playthrough with everything narrated: https://www.youtube.com/watch?v=wFmcgB3bikM