Yuri manga, taking place in a fictional Russia.

Sarutorine Aldike, or Sari, is a bright, cheerful princess who wants to go on an adventure because she is bored of her tiny little castle in the countryside. One day, a hoard of vicious demons known as “Oni” come knocking on her doorstep, threatening the lives of everyone in the Kingdom. Thankfully, they are saved by a lone traveler named Kibitsu Mikoto who slays these monsters with a mysterious “Peach Eye”. Shocked by the dangers of the outside world, Sari decides to set off on a journey of her own. Little did she know that she will set in motion a chain of events that will come to determine the fate of this magical world.

Love is the new kid on the block when he runs into the Peach Club, the local gang. Simple and gentle, with an interest in sex toys, Love isn't looking for trouble. Too bad the gang's got plans for him. And so does their leader, Peach.

Team Captain Yoichi Kouda is a high school track athlete "specializing" in 200m distance running. He has neither the speed for short distance, nor the stamina for long distance. And other events are out of the question because he has no agility whatsoever. What he does have is determination to train longer and harder than anyone else.

On a team with a celebrated history but has declined in recent years, he is surrounded by teammates more talented but less motivated than he is, and he finds it harder and harder to motivate himself to improve, until the "cool beauty", Momo Tange walks into the picture, capturing the attention of the entire school, as well as Yoichi's heart.

From Dan of Population GO:
An island was recently discovered off the coast of Japan. This island was mysteriously full of young men and women who lived as though they were in medieval Japan. The Japanese government immediately went to work enrolling them into modern Japanese schools. But not all is as it seems with these islanders. Could they all be descendents of the yokai expelled by the fabled Momotarou? Nahh, couldn't be.

A collection of stories:

1. Rakuen no Jouken (The Conditions for Paradise)
Two adult women figuring out the boundaries in their relationship--is too much freedom a bad thing?

2. Hoshi no Mukougawa (Beyond the Stars)
Chapter 1 prequel. It's about how Sarina and Sumi first became more than friends.

3. Bathed in Sunlight Filtering Through the Trees
A continuation of Sarina and Sumi's relationship.

4. 20 Musume x 30 Otome
About an art prep school teacher who feels like she can't compare to her new 20-year-old girlfriend.

5. The Opposite of "Seme" Is "Protector"
Chapter 4 sequel. Keiko wants to take things further. There are two more stories in this series in the Lapis Lazuli Dream collection.

6. We're Aiming for Love Now
It's about two women who love each other just as they are.

7. Momo no Aji (Peach Taste)
A girl struggles to convince the object of her affections to take her seriously.

8. Sakurahime Hanafubuki
Set in Japan's past. A knight protects her princess.

21-year-old Ryu Yeon-seong is about to start his mandatory military service in the ROK Army. But unlike most other conscripts, he and four others are assigned to the mountain police rescue unit stationed at Mt. Bukhan, a small mountain on the outskirts of Seoul. Not knowing much about it, they think it'll be a walk in the park, and count themselves lucky to have landed such a cushy assignment. But when they arrive at the mountain, the group soon learn that they're in for more than they bargained for.

The popular gal who was my childhood friend is secretly uploading provocative selfies!? In his quest to uncover the secret of this popular girl, high school boy Riku discovers that his own deeply hidden emotions were being observed by someone else… A sweet yet suffocatingly intense blend of youth, love, and suspense.

One day, a boy peeps on a girl, and when he looks at her bare chest, what he sees is…

Kitagawa doesn't know what all the girls see in the cool emotionless Iijima, so he starts spying on him. One day he catches Iijima doing something completely unexpected!

She is the greatest and the last cultivator of the twenty-fourth century, however due to a certain mishap, she crossed into another world, into another body which has families oppressing her, a scumbag fiance abusing and steping over her…… Trying to take advantage of her now? Keke! Knocking on death’s door! Those who follow her will prosper, and those that oppose shall die! Behold as she pays back those who attempts to climb over her several folds!

In the Canglan Continent, only those that who manage to awaken a Martial Spirit can walk on the path of cultivation. In this world, only those with stronger martial spirits can communicate with the heavens and earth. Qin Nan, born in Linshui City, was a peerless genius who possessed talent and was thought to become a great cultivator in the future. However, things changed when he ended up awakening a grade 1 Martial Spirit, resulting in him being considered as trash.

Fortunately enough, Qin Nan was struck by a ray of lightning while practicing his martial arts and coincidentally obtained the Divine Battle Spirit, which was capable of leveling up. Breaking the ultimate rule of the Canglan Continent, little did Qin Nan knew that his Martial Spirit possessed a great secret that will slowly unravel the mystery as the story goes on.

Now join Qin Nan and his companion along their journey, battling against various opponents, outsmarting their enemies and seeking the answers to unveil mysteries.

Its an amazing story about one martial arts journey through marriage, fatherhood, and battles.

Betrayed by his peers, the great God's fifth incarnation resulted in his ending up in the body of a piece of trash, located in a small corner of the Hundred Wars Kingdom. With his new life, he will rise up again! If a God stands in his way, he will slay the God!

From Infinity Studios:
At the beginning of the 21st century a sudden increase in genetic mutations cause some people to be born with special abilities. However, these enhanced humans are not welcome amongst the general population. As time goes by, they are marked for exile and shunned by society, resulting in a life of crime for many. As their special powers make them difficult to apprehend, the government joins hands with an unofficial, secret group of bounty hunters known as Peigenz. The Peigenz organization is filled with the most gifted and highly trained mutated individuals.
Jay Berell, the heroine of the series, is a normal high school student. During a battle between Peigenz and a dangerous serial killer, Jay find herself caught in the crossfire. This triggers her special mutant abilities and leads to her recruitment into the Peigenz organization.

From Fifay.net:
Beijing of the 1920s is where the young and fashionable generation confronts the old and conservative one. During this period of social change, three brothers and one sister struggle to free themselves from the oppressive traditions of their grandfather. Help comes in the unlikely form of a Peking Opera actor, and his lively crew.

Peleliu - Rakuen no Guernica follows the daily lives of Japanese soldiers taking part in the Battle of Peleliu during World War II: a high-casualty, months-long campaign. The main character, Tamaru, dreams of returning home to become a mangaka, and sees their island outpost as a wild paradise that can one day be used as a setting for one of his stories. Most of his comrades, however, are prepared for the more realistic scenario -- that they will not be leaving Peleliu alive.

From Sound of Jewels:

Our hero is a high-school boy and a mangaka. A handsome mangaka! A hard worker mangaka! And he attends a famous school for mangaka! He also always finishes his work before the dead-line!
Our heroine is a clumsy editor. She’s always doing her best but she’s still an idiot. She never finishes a work before the dead-line and made a mistake in the number of pages.
So what will happen when the two of them will met…?

A young artist of anthropomorphic military machines slips through time and finds himself in the year 1939 on Mongolian-Manchurian border where he discovers a rather unusual fan of his work in the form of Japanese tank crew commander.