From Kogarashi Scans:

Surrounded by 4 good-looking childhood friends, Mizuho's everyday life is full of nothing but heart-racing moments ♡ On top of that... Lately, Kizuki, the youngest among the group, has been drawing in steadfast towards her!? A dazzling tale of youth begins!

The first lieutenant of the Space Alliance Defence Force, Suna Kim, travels dimensionally to a fantasy world called Rofan! An extreme survival story plays out after she dies and reincarnates as the daughter of Duke Langtry, who was cursed and killed. The frugal lady travels in search of her spaceship, which crash landed in the unfamiliar and barren fantasy world. A lively and brutal romance in court!

Ohno Fumi is a poor 2nd year high school student. Because of her father's debts, she's kicked out of her own home and has to rely on her own connections to survive. Thus begins her life as a live-in housekeeper for a reclusive writer.

Chise has always believed: "Mom's actions are for my sake, so they're correct"—even when feeling suffocated. One night, she sees the delinquent classmate Asahi ride his bike with his friends, and starts to become intrigued by him...?

From Chibi Manga:
Staying together with a sadist teacher!? The “oni” is terrible, you know!!

A poor high school girl, Moka has to work for her living everyday. The rescue came from her admired teacher, Onimiya-sensei, but… Sensei’s true self is a sadist!? what will her life be now~!?

In a country that rejects magic, Mueller. Kate was working as a maid in the countryside. One day, a suspicious servant comes in to Dale M, the artist she works for...

Kiniiro no Corda - Daigakusei-hen (La Corda D'Oro - College Arc) is set three years after where the previous series ended. Our favourite characters have moved on to college and are all pursuing the new goals that they have set for themselves. Far away in Austria, Tsukimori continues to keep in touch with Kahoko while steadily expanding his violin techniques. Comparing herself to the rest, Kahoko finds herself in distress! Will she be able to follow her heart and discover her own path as well? The college arc of La Corda D'Oro begins! Stay tuned!

The twins, Sei Shunran and Sei Shunrai, are often mistaken for the wrong gender. The older sister, Shunran, is smart and the younger brother, Shunrai, is beautiful. Shunran wants to take the civil service exam and not enter the inner palace. So the twins switch places. Shunran will take the exam, and Shunrai will enter the inner palace.

By Voiceless

Hinako Momose isn't very good with men and had been going to all-girls' school. For Hinako, the high school that she got into is a formal all-boys school with only 4 girls who got in (including Hinako). Poor Hinako is getting teased by Mizuki, a boy who sits next to her in the class and the class representative Shun gives cold glares at her. What's going to happen to Hinako's school life?!

Unlucky girl from the modern time goes to another world, unexpectedly receives an incredible power, and capturing the crown princes from four countries' heart, all the way to become the imperial harem's lord?

Crown prince Cecil was so brilliant that everything in life was easy to the point of boring him, then one day, his fiancée Bertia suddenly said "Prince Cecil, I am a villainess!" Claiming that this world is the same as that of an "otome game" from her past life and that she is playing the role of the "villainess" in it, she aims to play her part well and have their engagement annulled. With that goal in mind, she sets about causing turmoil in Cecil's daily life.

As the monster's teeth drew near, it was then that I remembered. "I've witnessed this scene before." This was the world of an RPG I played in my previous life. And I, as the main character's childhood friend, was the losing love interest who would be turned down by him in the future. The childhood friend whose role ended one hour into the opening after confessing to the main character as he was about to set off into his journey. The one many players sympathized with as the main character would meet another girl who would cling onto him during his journey. If I remain in this village, in the future I'll be the losing love interest?! To prevent that from happening, I'll leave the village and make use of my newly blossomed ability in compounds with becoming an alchemist at the royal capital as my aim. I don't give a damn about some job that requires me to be the main character's childhood friend. I'll be seizing happiness with my own hands! (MangaUpdates)

From Chibi Manga: Mitsu is a high schooler who looks cute and fluffy, but on the inside? The first day of her transfer, she meets a popular guy with a mysterious weapon. She's scared of him but she knows his secret?

Poisoned to death by her own betrothed?! Eunha didn’t wake up in a novel’s story just to get killed off again as an unfortunate extra! To change her story she needs a cover… 6 months pretending to be the fake fiancée of the novel's male protagonist, Duke Noah Wynknight. But will this cold-hearted, angel-faced demon of a man really help her avoid another ill-fated ending?!

One day, Satomi is bothered by a pervert on the train and a boy helps her. She wants to see him again to thank him and finds him at his school, but Yugyuu-kun is a silent and distracted boy...!?

Rika is 19. She loves cosplaying, especially wearing high-school uniforms. On an online dating site, she meets a high school student, Hajime. He turns out to be her ideal guy and she meets him pretending to be still a high school student... Can this kind of relationship work?

The troubles of the handsome college student, Kei Tachibana, is that his cute, older girlfriend, Chisa, is crazy about other men. What's more is that the men are 2D "Oshi Characters." What tomorrow will Kei-kun face as he fights against those blasted "Oshi"?

This is a love comedy between a younger, devoted boy and working otaku girl!

From Comic Sylph's Official Homepage:

Out of the blue, protagonist Snow White finds herself transported to a strange world. Here, many unusual creatures roam, and all the signs and words are backwards.
To leave this world, Snow White must fulfill one condition:

"Make Alice the King."

For the sake of returning back to her own world, Snow White must team up with Alice but…

A strange yet wondrous fairytale-like fantasy awaits you.

Anne (17 years old) is a girl who attracted demons ever since she was born. Mephisto, a great demon, wants her as his bride in hell... But Hal (12 years old) is a genius exorcist who saves Anne from her sad fate. Now, he proclaims that Anne is his bride instead!?

From Condensation:

Following the scandal involving his latest work, famous suspense novelist Kevin Fredward retires to the countryside to escape the media and the demands of city life. He posts a wanted ad for a new housekeeper, but who should come knocking at his door, but Rosemary--a talking duck! As wise as she is competent, Rosemary soon becomes a permanent part of Kevin's life. Under Rosemary's guidance, Kevin takes the steps to stop running from his past in order to change himself and his future.