The manga centers on a “twisted” relationship.

Village girl Chelsea, who is beloved by everyone, is actually the reincarnated ex-Demon King.
However, when she reincarnated, for some reason neither her magical powers nor skills were inherited, and she was forced to live as a normal human being.

Humiliating days continued until one day, the remnants of the Demon King's army appeared to loot the village. Hunted down by her former subordinate, who did not realize her true identity, Chelsea finds herself in a perilous situation. Then, a skill finally manifests! The name of that skill is "Begging for Mercy"!?

A 30-year-old Japanese NEET joins a private military contractor in the Middle East and becomes the handler of some soldiers.

Tanaka was a salaryman who lived an average life. That life came to an end when he was 41 years old…or it was supposed to. But when he came to his senses, he was standing in a world that resembled ‘Medieval Europe’. There was no heating system, and food was eaten with your hands. On top of all that, pigs ran wild in the city…and what did the pigs eat? Shit. And in this harsh world, Tanaka would live his second life as ‘Varian De Lioncoeur’. Will this average salaryman be able to survive?

Links:
Web Novel: https://ncode.syosetu.com/n4662ec/ (Japanese)

A dark, tragic twist on the loli theme.

Picking up directly after the events of 20th Century Boys, it seems like the world is finally out of danger, but the mystery of "Friend" still exists. As the world is threatened again, Kenji must search his memories for any clue about "Friend."

Note: 20th Century Boys and 21st Century Boys' combined storyline won the Grand Prize at the 37th Japan Cartoonist Awards on May 9, 2008.

Seto is a serious kid who leads a quiet High-school life, until he starts to get teased by resident Gal Anjo.
This is web version of Yancha Gal no Anjou-san

University student Kenta is excited to be going out with the quiet but beautiful Sachiko. Six months into their relationship, a side of Sachiko other than her "ladylike" side becomes apparent. The more you know about her, the more you fall in love with her.

The daily life of a young man, whose little sister is a cat.

A clumsy princess and cool adventurer collect materials for their new country!

A new kingdom-building fantasy!

A comedic take on the daily lives of students in a co-ed high school.

The geniuses and eminent figures that have left their names across history tend to have special fetishes. By taking this anecdotal evidence and turning it around, a class of students with special fetishes was created with the purpose of raising geniuses. Seijun Private Academy class 2-9, also known as the Special Idiosyncrasy Class. White bitch gals, peeping toms, perverted inventors, extreme masochists, exhibitionists…… Itou Manami, a fledgling virgin teacher has been put in charge of this class. Will he be able to fulfill his responsibilities as a teacher against these students and their special interests!?

When people die, they end up in the Ministry of Death, where they must fill out the necessary forms (the paperwork doesn't end at death!) to be able to ascend to heaven. Depending on the lives these people lived though, their application may not be approved by the employees of the Ministry of Death, and they may be sentenced to hell instead! Follow the daily lives of the employees as they judge and assist the dead in the afterlife.

In shock after failing his college entrance exams, Nishikori Kon took his pet cat M'lady and fled. He ended up going from Kyoto to Mount Hakodate in Hokkaido. At his wits end, he was picked up by a young man named Tachikawa Ayakane, who hired him on the spot to work at his and his brother's café (though his older brother hates the word 'café') "Coffee & Cat." It turns out Ayakane was so impressed with Kon's pet cat's appearance that he wanted him to get the 5 unkempt cats of the establishment in order. Now Kon serves all the cats, but he has a secret that the brothers don't know anout. Kon can actually see cats as human beings and understand their speech! Kon and his pet cat's new lifestyle is just beginning!

The one thing not ordinary about high school student Ryouta is that he has an aspiring manga artist for an older sister. She is so dedicated to her drawing that, despite being 21, she's never really been in a romantic situation. Unfortunately, when she gets her first real job, it's to write an erotic manga. Desperately, she enlists the reluctant Ryouta's help, as a 'model', to figure out how exactly to draw this sort of manga.

The girl, Mana, has no problem with seeing the scenes she plays with her brother as nothing but a hollow reference for her works.... But she fails to realize that her brother seems to become more and more flustered with each 'live performance'.

Hatano Takaki is a third-year in high school who can’t wait to become a “real adult”. One day, he passes by a café and finds himself mysteriously drawn to the proprietress, a mysterious woman who seems to be hiding a secret sadness. Through her, through coffee, and through his encounters with the other café patrons, he begins to taste the bittersweet feelings of love and growing up.

What happens when several women with special circumstances compete for a rich handsome businessman's hand in marriage? Let the curtains rise on the “Courtship Battle Royale” show, where anything goes! Thus begins the beauty Gotou Yuuna's struggle to overturn her debt-straddled life!

From MangaHelpers:
Souichi is an art student, and one day he saw an amazing painting at his university that made him want to study under the artist. When he went to learn from the master, though, the man did not accept him. Shortly afterward, he met the man's granddaughter, a blonde-haired, blue-eyed child called Rune. She was a very energetic kid who drew Souichi into playing with her in the surrounding countryside. Soon, Souichi learned the truth--the painting he had been so impressed with at his university was not the grandfather's work, but Rune's. She is the artist from whom he needs to learn.

Kosugi Naomi is an unremarkable girl in all aspects, but she sports blonde hair that invites the wrath of her HR teacher, Hoshida Ryuuhei, a large and rough guy who often threatens to beat up his students. But Naomi takes in all of Hoshida sensei's yelling and threats with a smile and seems to invite more with her actions.

A world where cute girls become cards and fight.
And it's terrifying (happy?). In other words, you have to get the other girl to take off her clothes.
Use the girls, who materialize from the cards, and their intelligence and strength to win!
If you win, the other girl card is yours!
A harem is not a dream.
The long-awaited comic book version of this sexy card battle comedy is here!