From Yen Press:

The elite and beautiful Ririchiyo Shirakiin has a bad habit—she can’t help but lash out at people with her vicious tongue, all while hiding behind a mask of haughty cool. This attitude has a lot to do with people minding her business because of the Shirakiin family name, but it troubles Ririchiyo to no end. In search of independence and solitude, she moves to the Maison de Ayakashi, an apartment building full of wealthy tenants and with its own Secret Service. Ririchiyo is eager to be alone, but upon her arrival, she is greeted by Soushi, an SS agent arranged for her by her parents. Ririchiyo tries to turn Soushi away, but Soushi’s dogged devotion to his new mistress will not be deterred. The threat against the residents of the Maison de Ayakashi are not to be taken lightly, after all. And despite his puppy-like demeanor, Soushi is not to be trifled with either…

Kamiyama village is considered a "ghost town", with an ever declining population. However, the mythical creatures known as "genjuu" who live there aren't counted towards the population total. The human girl Akane gets forced into the role of the Kamiyama village Public Outreach Committee president. Along with the help of a minotaur, a cyclops, a phoenix, and more, she's tasked with revitalizing the village. Follow the struggles of the beautiful genjuu girls straight from the mind of the up-and-coming mangaka, Koto!

Kodo Ikusei Senior High School, a leading prestigious school with state-of-the-art facilities where nearly 100% of students go on to university or find employment. The students there have the freedom to wear any hairstyle and bring any personal effects they desire. Kodo Ikusei is a paradise-like school, but the truth is that only the most superior of students receive favorable treatment.
The protagonist Kiyotaka Ayanokoji is a student of D-class, which is where the school dumps its "inferior" students in order to ridicule them. For a certain reason, Kiyotaka was careless on his entrance examination, and was put in D-class. After meeting Suzune Horikita and Kikyo Kushida, two other students in his class, Kiyotaka's situation begins to change.

A what-if story taking place in parallel world which focuses on the relationship between Kiyotaka Ayanokoji and Suzune Horikita.

The second spring at the Advanced Nurturing High School is welcoming Ayanokoji and Class D. The special exams aren't only what awaits them, but the unique freshmen as well. Kazuomi Hōsen and Ryūen. The two who shared the bad reputation between themselves during Ryuen's middle school days. Takuya Yagami, who proclaims to come from the same middle school as Kushida, is approaching her. And the capricious Ichika Amasawa who is pulling Ayanokoji left and right.

From Seraphic Deviltry:
A collection of oneshots previously published in the Danshi Series anthologies, following themes such as stalking, unknown/masked lovers and humiliation.

From Bunny's Scanlations and Must Be Endless:

Top student Mizusawa, third year in high school, was kissed by his drunk homeroom teacher, Takatsu (37 years old). After being told by a dazed Takatsu, that he'll stop the unrequited love he's been holding for him ever since his school entrance, Mizusawa has for the first time taken an interest in him. A few days later, ever since his secret was known, Takatsu has been scared of Mizusawa getting close to him and each time Mizusawa would shudder with excitement. However, one day after learning that Takatsu has gone to a marriage interview, suddenly Mizusawa realized that he wants the older man. Also features the adult love between a mail carrier doggy type and an ill-tempered novelist.

Volume 1 : Young Bad Education
Volume 2 : Young Good Boyfriend

The prequel to Black Jack, Osamu Tezuka's classic series about a brilliant maverick doctor who practices without a license. This story follows Black Jack when he was still a young, unorthodox medical student in 1968.

http://toptoon.com/ranking/ep_list/YoungGun 

From: Easy Going Scans
High-school student Jinpachi Kogure is a member of the manga club and is no good with women. Yumika Testuyoshi is a troubled female high-school student who's always skipping school and searching for a girl she doesn't hate. However, these two are in reality young masters of the art of killing people:"Young Guns.

Due to the great popularity of the one-shot, handsome butlers are newly added and serialized!

Shuji Karasuma spends his days in quarrel.

At first sight, I fell in love with the owner of a masculine butler cafe when I was forcibly treated for my injury !

Although she is a yankee, her clumsy work is very popular with young ladies.

A hit on the heart, a work comedy released by a pure Yankee !

One chapter in the saga of Shima Kousaku, salaryman at Hatsushiba Electric.

In this part of the series, Kousaku has just started working at a branch office for the company doing an unexpected amount of menial labor when a chance meeting with the company president leads to his dearest wish being granted as he is transferred to the central office. Not all is well there, though, as he becomes involved in the complicated affairs of his colleagues, whether in business or in romance. In spite of everything, however, he retains his faith in the company and an unflappable optimism.

Makoto Hayakawa, who is called Shin, is a third-year high-school student about to take entrance exams. He hasn't decided what to take for college yet. Compared to the other kids, Shin is a bit of an oddball. The neighborhood he lives in, M City of Tokyo, has three massive structures called "Reactors".
One day, a mysterious girl crosses his path, and in front of those reactors their fateful first meeting takes place...

A guy who loves baiting cats in the street, is sometimes moved to tears by the sunset, and can't stop looking at beautiful girls in the street…that’s Young-kun.

The voice of his soul shouts, 'When I’m on my bicycle, I'm cooler than everyone!’...a desperate, reckless, confidence born of youthful abandon. Come in and enjoy Young-kun's world!

Kang Sunghoon, the youngest member of a 4 star hotel kitchen in Korea, has the ability to memorise different kinds of ingredients. However, as the youngest, he's still unable to escape dishwashing duty.

It was a ridiculous piece of fiction, one that I’d be ashamed to call a novel. Yet, that was exactly what I was transmigrated into.
Larsen Mayton.
I became that supporting character, a wretched scoundrel who got purged at the age of 17.
Now, as the writer and creator, I shall reshape the world of the character Larsen Mayton.

Your Adventure" is a comic where YOU decide what happens!

From Lililicious:

In Your Color, a girl goes to the same high school as the girl she admired in middle school, her senpai in the Art Club, and ends up modeling for her when she has to leave the track team due to injury.

Rosenne Walker was imprisoned for killing her husband at the age of seventeen.
Although she attempted to escape several times, she was eventually caught and arrested in Monte Island, the worst prison on earth.

And Ian Connor was responsible for transporting her.
He never blinked an eye at Rosenne's shameless lies.

However, Ian suddenly came into realisation that her lies might be the truth.

"Will you believe me no matter what I say?"

"It doesn't matter, so tell me anything, Rosenne."

Will her lies turn out to be the truth in a time that is unstoppable?