Two twin sisters contracted a mysterious bacteria from a trip and suddenly gained enormous power. One psycho sister began trying to kill the other because they both loved the same man, while the other sister and her boyfriend began to flee as everyone else became innocent victims...

To search for a missing friend, six people go to a closed theme park "Birdcage Castle" which they thought to be deserted.
However, in there, groups of two people are chained to each other and the game of death begins.

From Sura's Place:

Money, lust, and desire for powers. None of that is needed for a man whose importance is as small as a gallbladder. However, if a man wants true peace of mind, he will need to have those.

A composition of oneshots.

Shinjuku Deluxe
Goodbye, March;
Please God;
Time After Time;
Apron and Sunglasses;
Long Tall Sally;
Spirit;
Hot for You;
Sayuri-san's Worries;
Friends;

A Girl’s Dream.
Chiaki is a young woman whose life seems to alternate between her workplace, a hostess bar, and her good-for-nothing boyfriend. However, she dreams of more?
and an oneshot that contains just cheap sex

From NOIR:
Yuri is a doll-like child, orphaned at a young age when her mother dies in a car accident. In her will, she requests that Yuri be placed under the guardianship of a close friend of hers, Kim Dowook. Taken in, Yuri begins a new life, different from her life before. Where will this take her, and what does she think of her guardian..?

A man moves to Tokyo and writes a letter to his parents describing his experience.

When Momoka, a very shy girl who loves rabbits, is forced to change her seats, she finds herself at sitting at the back of the class, next to a boy she has never spoken to before, Narumi. Everyone thinks that he is strange and all of the girls are afraid of him. Why? There is a rumor that he is cursed and that the girls sitting next to him will never find love. Momoka believes in the rumor and fears him, but she gradually discovers the true Narumi and eventually new feelings are taking a hold on her. Is it friendship or... love?

In the story, the main character is on the way back home from being rejected by a girl when he finds and picks up a high school girl who has been abandoned on the roadside.

Kojiro Suzuki (Protector: Ifrid) belongs to the Discipline Monitoring Committee of a high school for kids who have a stronger than normal "Divine Protection." He works hard every day to clear all sorts of trouble. On top of that, he's constantly pursued by the stunningly beautiful D.M.C. Chairman Lauri Asagiri (Protector: Leviathan)...! This is a "metamorphosis love battle" between a super beautiful and feminine top and a stone-faced, handsome bottom with a dark past, unfolding in a fantasy-style high school!!

*Let me explain! Divine Protection is a power all humans possess since birth. There are various kinds of protection, based on the original protector and their powers: angels, demons, holy beasts, demon beasts, spirits, and so on. Individual power is generally low, but in some rare cases there are people with strong Divine Protection...

from Renta!

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Suzuki Kojirou (his Kago is Efreet) is a member of the public morals committee at a high school which gathers a lot of students whose “Kago” powers are stronger than normal people.

But, for some reason, he’s being pestered everyday by the super beautiful president of the public morals committee, Asagiri Lauri, (his Kago is Leviathan) who always has to run around solving all kinds of problems within the school because of his strong power.

Pushy Seme × Expressionless, handsome Uke. The fantasy campus unfolded. Metamorphic・Love・Comedy❤ Love developments! Drawings and new stories enclosed☆

- from Canis Major Scanlations -

A bloodstained man stands in front of a terrified girl. He proclaims his love for her and makes this ominous declaration: A year from now, she will either die alone or will be with him forever. Now, rumors abound about the cursed girl that causes any boy who proclaims his love for her to die. Join us to discover the mysteries of Metronome.

From Chinatown KM:
Nanase Takeshi is a normal high-school student with a slightly traumatic past. You could say he's hard-working but in reality, he really cares about what others think about him. For some reason, he is going out with his childhood friend, Isoshima Kurumi, but otherwise, he's a pretty normal guy. One day, however, he sees a girl wearing a uniform he had never seen before, who had collapsed on his school grounds. She is Aiba Mui and her appearance marks the beginning to a series of weird incidents. She once said, "to be honest, I'm a magic user and sorry. I turned you into one too."

Three girls want to make a girls-only band, but they need a singer. This one cute voice turns out to be from a boy! What will happen when this boy gets involved with them?

Ichiba Kurogane is the son of a rich business family, but he wants to earn money by his own power. For this, he goes to Gakuenzono Academy, where students are scored only by how much money they can earn! Within the school, all transactions are made with school-yen, and anything else is forbidden.
Kurogane can tell by sight which people are going to be big earners, and he ends up latching onto a young cook, Naruko Hana. Hana has her own Japanese cuisine cooking club, with a rundown, unpopular, soon-to-be-closed restaurant. With his help to gain customers, she may be able to realize the true earning potential of her cooking skill!
Unfortunately, Kurogane brought his wallet with him to school, and its contents involved a rule infraction that ended up saddling him with a 1 billion school-yen fine! The merciless student council president, Asamatsuri Hagane, demands that he pay a hefty installment on the fine each month or face expulsion. Will Kurogane be able to overcome this setback and reach his own earning potential?

From Canis Major Scanlations:

Mizushima, a florist shop staff, wanders into a big mansion’s garden because he’s attracted to the flowers there. Fujisawa, who lives alone in that mansion, suddenly came to request for a flower arrangement from him. Upon arriving at Fujisawa’s mansion again, Mizushima is caressed by him…

Is he only playing around with Mizushima? What are his true intentions?

On an alternate Earth in the not too distant future, a monster is found by 2 kids, and shortly after a 3rd friend joins the group. It's a story about the monsters journey through life as he tries to find out who and what he is...and about his true destiny. https://www.facebook.com/grumblemanga?ref=hl

Fuuko is a shy girl—so shy that she has trouble talking to strangers. Determined to change herself, she starts working as a waitress at Café Rhodos. The people she meets on and off the job will lead her through the often frightful world of adolescence, and beyond.

Hikaru Onuki is a 22 year old girl whose hobby is to cook homemade cuisine in order to find a boyfriend. But for some reason, no matter how hard she tries, she is unable to find one.

Very few adolescent boys and girls have an onset of special abilities. Yuu Otosaka uses his ability unbeknownst to others in order to lead a satisfying school life. And then, a girl named Nao Tomori suddenly appears before him. Their encounter reveals the destiny for wielders of special abilities.

When a local volcano erupts, the depopulated town of Kanematsu suddenly thrives as a hot-springs resort. High-school student Tomiyama, a cool character, can’t accept this dramatic transformation, while his friend Sakurajima enthusiastically embraces it. This is the story of how their friendship is affected by changes in their town. The freely-drawn, casual style the manga brings to its portrayal of the shifting emotions of high-school boys has earned it many fans.

From MangaHelpers:
At school, Kamazaki Yuu feels as though there is a circle drawn around her, a line that no one will cross. A part of it is because her face looks mean, and another part of it is because she's rather socially awkward, but the largest part of it all is that she has earned a reputation for being really bad-tempered and violent to the people around her.
This all changes in her second year of high school.
The cute, friendly, and popular Kume Asami one day inexplicably crosses that invisible line and decides to be her friend. Kume introduces "Kama-chan" to friendship and to the 5-man futsal club that meets on the school roof. As Kama cautiously enters Kume's club, she may find herself able to grow past the bad expectations people have of her, and enter into a new, happier, high-school life.