Mireille is the daughter of a bakery owner and her twin brother Fred was adopted into another family when they were kids. One day a letter from her brother arrived, saying he was in love with another man's woman. She replied, challenging him to be a man and claim the woman as his.

Two months later, a beautiful young man named Richard, claiming to be a messenger from Fred, visits and tells her "I've come for you." When the bewildered Mireille resists, he proceeds to kidnap her! It turns out that Fred has eloped with the crown prince's fiance, and it is now her responsibility to impersonate Fred - the former Count of Bernhardt!

From MangaHelpers:
Second Lieutenant Mononobe Yuu has been sent to Midgard, to attend the all-girl's school where his sister Mitsuki is the student council president. The school is specifically for people who have "D" powers, who are needed to fight dragons, and both Mitsuki and Yuu fit the criteria. On his arrival, he meets and befriends another classmate named Iris Freya, who is having difficulties with her "D"-related schoolwork. They will do their best to succeed in this dangerous world.

A highschool prostitute wants to buy concert tickets, and meets an interesting client.

As a child, Yashiro Nonoyama developed an intense fear of men due to boys constantly bullying her. Now in high school, she dreams of being reunited with her first love: a girl who protected her one day from her bullies. Yashiro is in disbelief when a transfer student named Mikoto Saionji arrives who looks a lot like her first love, but she later discovers that Mikoto is actually a guy, and that he was her first love. Yashiro learns that Mikoto is rapidly turning into a girl, and the only way to counteract this change is for them to passionately make out with each other every day.

Kika has a crush on Agi, but what does he see in her?

For her brother Subaru's sake, Hitomi decides to take his place at an all male prestigious high school for a year until he recovers and is discharged from the hospital. She gets to the school and runs into a few strange guys on her first day, but as soon as she tells them her name - they are surprised and make her go to the Lion Club. Hiding the fact that she's a girl will be difficult enough and now she has to deal with this strange group who are forcing her to join their club because they all believe that in their past lives they were members of the Shinsengumi!

Description by LuffyNoTomo

From Kirei Cake:

Suzu is your typical school girl looking to live an ordinary school life...

...Up until she realizes that she's attending a school populated with vampires, who have the ability to attract and hypnotize women for their own thirst.

Then comes Akishiro, a relatively quiet boy but is a vampire, who attacks Suzu and ends up sucking up most of her blood, to the verge of death.

However, what happens when Akishiro develops a weird affection for Suzu, where he can't bear to see her being bitten by anyone else?

On the day of the high school exam, it fell before Chiyo, a boy like Light, General (Tasuku). I assume that he is bad, Chiyo... But actually he was a motorcycle racer. It's Chiyo, but the general is showing me a new world that I didn't know about.

From Chibi Manga:
Because she loved the word "wisdom", Rui hated the words "waste" and "fuzzy". One day, a guy named Shou appeared in her life. And thanks to that encounter, Rui will suddenly change... And that's the beginning of a "rainbow school daze" between that super dry girl and that careless guy.

The "prison survival action" story is set after the sudden emergence of special powers in certain pockets of humanity. To deal with these so-called "Altered," a mysterious remote island prison named "Area D" was built.

Nika is a 3rd-year middle-school student with social anxiety. One day she drops her eraser in class, and slacker Akira picks it up. After school, Nika follows Akira to an ice rink in pursuit of her eraser. There, she discovers Akira’s beautiful figure skating and her own love of the ice. Alternatively, Kiwako is a brash young champion ice skater and Akira’s childhood friend. Akira tells Kiwako that one day Nika will become her rival. Which genius ice skater will become The Ice Queen?

Mephisto Bart Kucabara is a devil lawyer. In order to return to the demon world that he was exiled from he needs to collect enough Dark Matter. To do so he creates a plan to claim the Dark Matter from the souls of sinners sentenced to hell. Prove the soul's innocence and the Dark Matter becomes his. But how can he gather enough Dark Matter when his kind personality causes him to continually use it up in order to defend the soul from the Shinigami that has come to take them to hell?

English Publication

From: Easy Going Scans
As a result of a strange encounter with a mysterious carcinogenic fetus he found inside a patient’s skull, brain surgeon MINAKATA Jin has slipped back through time. Equipped with modern medical knowledge, he faces various fatal diseases and injuries. Then, he meets the ordinary people of Edo as well as illustrious figures, and his surgical knife carves out a new history and story of life.

Note: Won the Grand Prize at Tezuka Osamu Cultural Prize in 2011.

Released in English by the Artist on his Patreon:
https://www.patreon.com/motokamurakami

"There are too many unnecessary people" - A story of destruction dedicated to a certain person who thought such.

25 years old, no money, no job, no girlfriend. Kurokawa, a man absorbed with an anime called "Meromero Melodies" and on the fast track to nowhere in life, grabs hold of a certain ability, "BANG".

From BL-Gyaru and Must Be Endless:

He hit me again today. My lover Kan-chan, that is. But that doesn’t really matter. My love is being rusted by our bodily fluids. Mayama, my middle school classmate, has appeared before my rusted self and become conscious of my bruises and scars. But you want it to be like the past, on that rainy day you kissed me and froze… I won’t be satisfied with a naïve love. Drawn by Ogeretsu Tanaka, this is a story of true love and pain.

When Kassey was young, her grandmother used to tell her stories with adorable and fantastic characters called "Yumon". Now Kassey has suffered an accident and became stuck inside her dreams where she has close encounters with those now-not-so adorable real creatures like she wished, involved with a terrible criminal who's head was looked for with a tempting reward in exchange; his name is Eon

Autor's Facebook: https://www.facebook.com/DarkXMoniXShadow.Moni/?ref=hl

From Fluff Words:

1st Story -- Katsumi, a university student who hates troublesome matters a lot, leaves all the household chores to his childhood friend and flatmate, Akira. He’s lazy to the point that he doesn’t want a girlfriend and gets call ladies to take care of his sex drive. Katsumi happens to find out that Akira likes him one day. Initially feeling indifferent about it, he starts to get impatient as there is no change in Akira’s behaviour even after the revelation. Katsumi eventually realises that he is worried because he hopes that their relationship can develop further…

From Dan of Population GO:
Based on the light novel of the same name, Kishimine Kengo has avoided playing video games his whole life in a society filled with it. Instead, he prefers the comforts of books of which he has a tendency to get drawn into the story, perhaps a little too much. Every time he reads a story he unintentionally imagines reliving the story as the protagonist. When Kengo learns of the Modern Game club fate may let him use his imagination for another medium, video games.

From Hoshikuzuu Scans:

A young photographer, Hirami Yuichi visits an island for an exhibition and meets the gallery's owner, Asahina Jun and fell in love at first sight. Even with a direct approach, it doesn't reach the heterosexual Asahina. However, one day when Asahina talked about his past with him, he was moved and he hugged him. Getting closer or staying away, both of them make it hard to leave. A painful love story that will squeeze your heartstrings. It is Nishi Noriko's debut piece!

From the master of love comedy manga, Wakabayashi Toshiya, comes a high school fairy tale about love☆!

Shindou Rei (Cinderella) comes from a very poor family. Her only clothes are hand-me-downs from her brother, even her school uniform. So everyone always mistakes her for a boy. Even her close friend Hakuba Ouji (white horse prince), who starts developing confusing feelings toward her all the while believing she's a boy. Tsukumo Yuki (Snow White) is the leader of a delinquent gang and falls in love with Rei at first sight, also believing her to be a boy.