From Seven Seas:
Three things you should know about Touga Eita, second-year high school student and heir to the Touga-style ninjutsu dojo: First, he really, really loves video games. Second, when given a choice between heroics and saving his own skin, he will always choose the latter. Third, he's never so much as kissed a girl.
All this changes when a voluptuous girl with wings and taloned feet named Aero appears and calls on Eita to help save her people-the harpies of Re-Verse-from the merciless onslaught of giant robot monsters known as Gigas. Eita will follow his newfound harpy friend into a whole new world, filled with monster girls and fantastical creatures beyond his wildest dreams.

Vyalen, the main character in the story, is a graduating high school student from their school.Their school was pretty known as one of the best athletic and academic breeding students. In other words, only those who have special talents, elite minds, and abilities could only enter the school. Each of the students were categorized according to their major fields-- like being an elite, academic, and athletic. But, for the school's first in history they were not able to categorize Vyalen for whom he has this unknown ability that allows him to "artificially" use or create talents that he's not even used to... Moving on, within only 12 twelve days he will be graduating from his high school. That's why he is in a hurry for confessing his love to her long beloved crush, Trixy. But suddenly one morning, on his way to school, he suddenly bumped into a puny little nerdy girl named Lnear. having the thought that he had heard this name somewhere... later on. He finally realized that it was a classmate of his that must be sitting next to him that never came to school since the first day of class...

From ShoujoMagic:

In 12 months you'll be invited into the life of a group of students who discover with joy and sadness the meaning of "Love."

Seducing the guests to make them pay the most, that is the job of a host. Takashi, currently the No. 1 host, is an apparent professional when it comes to being a host. Being a host isn't Takashi's only job. The Persona XII, guided by the stars are to preserve the balance of fate. The eyes on an assassin serves the guidance of the stars.

In this story, we’re treated to a twisted, gothic-horror remix of the classic Cinderella story (as re-imagined by a shounen author for a shoujo audience), where we find, in the end, that nothing comes free, and if it sounds too good to be true, well, there’s usually a catch. You’ve never seen Cinderella like this!

Is it safe to ride the elevator at midnight?

A collection of 12 short stories (& one extra) by Yoshida Satoru. The first features a woman who quit her job one summer, and is trying to find a happier life. The next few feature an unconventional method of getting rid of a ghost, and some annoying peeping neighbors who underestimate the cleverness of their large-chested target. [tethysdust]

From Muses Scans: The Justice Filled Cop “Aries” x “Pisces” the Newbie Delinquent with a Heart of Glass; “Taurus” x “Aquarius”; “Gemini” x “Sagittarius”; “Cancer” x “Capricorn”; “Leo” x “Virgo” and “Scorpio” x “Libra”... The outcome of these six romances is only known by the stars! Catching a delinquent, criticizing a Junior, fighting couples, attack of a meddlesome person and many other different types of couples~ Accepting the personalities of the 12 Zodiacs •

Shoyu operates a cozy pub called "Tamaya's" in a sleepy part of town. In the evening all kinds of tired office workers gather in his shop to drink away there daily worries. Shoyu has more or less settled down in his lifestyle as a gay bar owner, even though his love life has been rather lukewarm since the incident 12 years ago. What will happen when his past unexpectedly catches up with him?

Sakata Gintoki is a samurai living in an era when samurai are no longer needed.
To add to his troubles, oppressive aliens have moved in to invade. Gintoki lives with Kagura and Shinpachi, taking on odd jobs to make the world a better place... and to pay their rent.

Volume 24 contains Bankara (ばんから)
Volume 38 contains 13 (サーティーン)

From: Easy Going Scans

If you could find out a little something about the future, what would you do? Get rich off of the stock market? Use the media to become famous as a prophet? Or…

From MangaHelpers:

On his seventeenth birthday, Amamiya Kota was going to ask his classmate Misora Hiyori out. Tragically, he dies in a car accident but is given a second chance back in the living world on borrowed time. He gets entered into a competition called the 13 Game where other people like Kota who were supposed to die return back to the world and given an option: locate and kill 13 other players or suffer the fate of death. Each player is assigned to a handler, mysterious beings with special powers, who use them as if they were characters in a video game. Kota’s handler, Merume, explains that there are players like him all over the country, each with a unique ability that helps them kill, and Kota has to kill 13 players within 1 year. With his demon hands ability that was inspired from his hobby of magic tricks, Kota must unwillingly participate in this cruel game if he wants to live. [vyc]

An anthology of short horror stories by masters of this genre. The tone tends to vary between tragic, grotesque and humorous, making for a wide-ranging mix.

A compilation artbook/manga anthology, by Range Murata, with contributions by various artists.

From StarryHeaven:
Ema is obsessed with ghosts, and is even part of her school’s occult club. She’ll do anything that has to do with some crazy superstition about ghosts or spirits, and make sure that she goes out of her way to do it. Ema is known for this at school, and the series follows her pursues to find ghosts. Ema, unfortunately, cannot see the things that she loves, unlike a few of her friends…

Included one-shots:
Volume 1: Shuugaku Ryoko no Susume
Volume 3: Time Capsule and Happy End no Tsukurikata

*Scanlators stopped because of lack of interest in chapters 2 and 3.

From Yen Press:

It was love at first sight. The moment Hee-So's eyes met Won-Jun’s she knew it was meant to be. Their relationship took off when Hee-So confessed her feelings on national TV, but less than a month later, Won-jun is ready to call it quits without any explanation at all. Hee-So’s had a lot of boyfriends — Won-Jun is number twelve — but being dumped is never easy. She’s not ready to move on to the thirteenth boy just yet. Determined to reunite with Won-Jun, Hee-So’s on a mission to win over her destined love once more.

From Tranquil Spring:

Short random school life chapters about a group of girls who attend Watermelon Junior High.

A story about two unusually mature young people. They are both smart, very together and they are in love. But, as grown-up as they act, they are still just 14 and their feelings for each other are captured with tenderness and lack of nostalgia, but very cutely.

She wakes up not remembering anything, all because of her love and a terrible accident.