Meiji Era, an increasingly populated port city.

Mari, 16 years old, is a half-Japanese girl with beautiful wavy blond hair and big blue eyes like her father. Her appearance is considered heresy and she is constantly discriminated against. To avoid this, she stays hidden most of the time.

She observes from a distance a student who often lacks in inspiration. However, this student, who's named Shintaro and is the son of a celebrity, meets the girl one day and tells her that she looks like a mermaid.

From that day on, Mari plunges into a world beyond her status and origin.

From JManga:

Shio Asami, the wealthy daughter of a famous, deceased opera singer, aims to follow the same path as her mother. Moe Midorikawa, a young woman working several part-time jobs, dreams of becoming an opera singer as well. What will happen when these two meet?!

Oosuki Masato is an ordinary high school boy who is magically transported to an alternative world, but for some reason his doting, over-protective mother comes along as well.

Reincarnated to a werewolf magician, the Protagonist Veight was instated as the vice head of the Demon Lord's third brigade force. Occupying a remote market town, he was entrusted to management and defense. As a former human, born a monster, I can understand the sentiments of both sides well enough. Because of that, those around seem to think I'm a man of wisdom, or something of the like, but it's really just one trouble after the next. I have to follow those monsters that are overly quick to resort to violence, and do something about the humans, who start to complain immediately. So today as well, I'll do my best at managing the Demon Lord's main force.

In this manga, the ultimate middle-aged hunter travels to another world. This time, he wants to live a slow and peaceful life.

All her life, Chihaya's dream was to see her model sister become Japan's best... That is, until a quiet, unassuming transfer student named Arata tells her otherwise. A dream, he explains to her, is something she needs to work at herself.
Arata plays a competitive version of a traditional Japanese card game, known as Hyakunin Isshu, in a way Chihaya has never seen before. After taking Arata's place in a game, Chihaya discovers she has a passion for it. Now Chihaya wants to become number one in the world, the Queen of Karuta.

Note: Won the 2nd Manga Taisho Award and the 35th annual Kodansha Manga Award for Best Shoujo.
Was nominated for the 20th Tezuka Osamu Cultural Prize in 2016.

One day, a manga artist woke up to find himself confined by a high school girl.

Author's Twitter: https://twitter.com/R_kitada

Three years ago, a gateway between Earth and the Beyond opened over the city of New York. In one terrible night, New York was destroyed, rebuilt, and rechristened Jerusalem's Lot, a paranormal melting pot where magic and madness dwell alongside the mundane.
The mysterious super-agents of Libra fight the impossible to prevent the unthinkable.

When I opened my eyes I had become the duchess. But something isn’t right. I went as far as becoming a character but I’m just a duchess in name that gets mistreated by the maids and ignored by her husband. What a crappy life! Gosh, I don’t know what to do anymore. I’ll just quietly enjoy my tea, was what I thought. “Can you prepare tea for me again next time?” Something’s gone wrong with my cold husband!

I woke up one day inside the story of a novel as the maid of the disgraced duke and side character, Alejandro Quillo Vel Laviti. Will Alejandro’s fate change with the appearance of a new ‘extra’ character? What is the truth behind his cursed mark?

When the Demon Tribes led by a Demon King appeared and launched a massive war at mankind, all hope seems to be lost, until a brave group of heroes managed to turn the tide and even defeated the Demon King.

John Serieux, a mid-ranked soldier of World's Resistance against the demon's army, had fortunately been able to witness the Demon King's fall by the Heroes, but also was unfortunately killed a moment after. Miraculously, he was still able to open his eyes, only to realize that his mind had been sent back to the past when he's still a baby!

With all the memories of his adult years, the knowledge of many scientific breakthroughs during the war, and information of the upcoming great disaster all intact, John is determined to cultivate his potential efficiently and optimally to help change the future for the best.

All human beings have various interests, hobbies, and tastes. Akane’s brother is such a guy who can't even talk about such things but instead has been secretly watching his sister. He discovered though her secret, as she saw her doing SM...!? Can this be true…? A secret love story of an older sister and her younger brother unfolds…

The brave princess attacks the sexy king? The princess marries off to a royal family from a far-away country, and then notices that her fiancé is a savage pervert?! Not only does she have to resist against the ruthless prince, but also has to hide from an evil assassination! Meanwhile, the king shows off his compassionate side to the princess…

This story tells about a fantasy world where dreams and dreams of people come together, pouring out into reality. And where there are good dreams, there are nightmares with fears that turn into real monsters.

From Izumo no Ryuu:
A boy, with a virus which unlocks the primal beast, desires forgotten memories.

This story is about a girl from year 2011 that time travelled to year 3011. In year 3011, machines with conscience have taken over some of the humans and some humans with special powers have appeared. All of them want world domination but the humans want their freedom. She is caught between this conflict and struggles to be with the one she loves.

From Stiletto Heels:
Yukari was enjoying her single life until her elder twin sister, Ayaka, suddenly pays her a visit with a young man in tow, to ask for some strange advice! This is a story about a set of mismatched twins.

Omi Tsukasa, who still holds a flame for his close friend and first love, Su-chan, becomes a new teacher assigned to his old school. There he spots Su-chan's doppelganger, a student named Sugimoto. Upon finding out that Sugimoto is Su-chan's nephew, Omi starts having an interest in him, much to the annoyance of his target of interest.

Hayasaka Yoshihito was so impressed by lawyer Mikami Haruhiko that he decides to work with him at his small law firm. But it's not quite what Hayasaka's expecting. With the sexually harrassing lawyer Katayama Masaki who doesn't seem to do anything, scary secretary Shingyouji Miho, and Mikami himself who isn't quite the way Hayasaka remembers, things are about to get interesting for an idealistic young lawyer!

Story Ashita Naku is included in vol2

Uta, a teenage girl living with her older brother Reiichi and his wife Kaoru, experiences a feeling of great turmoil and unrequited feelings after realizing the fact that she has fallen in love with Kaoru. Even after consulting her friend a few times, Uta just can't get the thought of Kaoru out of her head and the consequences that could leave their relationship tumbling towards a dark road.