Lee-Si-Hyun is a friendly normal schoolgirl whose hobby involves a radio program called "The Girl's Teaching Classroom: Viva Love You." She claims to have a mysterious confrontation with an alluring male teacher that she will soon meet. What will this new relationship of theirs become?

From Elision-Scans:

While every other girl appears to like guys, Hanamura Taka is an exception. And then she meets Sakura-kun, a person from her new job... and he asks her to keep a secret for him.

A collection of cute short stories!

In the Kioku Senmei series:

V.1 - Kioku Senmei
In the year 20XX the vast city of New York is under constant terrorist attacks at public places. The police is clueless and the culprit is roaming the city free. The police’s only witness died, and her clones are useless, so they are left with no choice but to receive the help of Jojo Schmit of the EPIA section, a section dedicated to ESP related phenomena.

V.2 - Guuzen ga Nokosumono (Things Accidentally Left Behind)

• Kioku Senmei II

• Birth

• Cibi-01 no Ya! Ya! Ya!

Collection of 3 short stories, the first two are Please save my earth related, but they are standalones and spoiler free: PSME-Things accidently left behind PSME-BIRTH Cibi-01 no YaYaYa! (Cibi, right, not Chibi)

In order to achieve her goal, Himeko Yumeno starts the game "Vivid Monsters Chronicle."
This manga follows her and her friends who she meets along the way, in game and in real life.

The story is set in a futuristic and peaceful world made possible thanks to the invention of the Manifestation Engine (示現エンジン Jigen Enjin), a powerful engine that creates energy from the sky and helped to prevent an energy crisis five years prior.
On the island of Izu Ōshima, Akane Isshiki lives a peaceful life with her family. When the world is threatened by an alien force known as the Alone, Akane is given a special key by her grandfather, Kenjirou, which allows her to access the Vivid System and wear a Pallet Suit, granting her special powers. Joined by her friends Aoi, Wakaba and Himawari, Akane fights to protect the world from the Alone.

A collection of vocaloid short stories.

Average day at the Vocaloid household.

Struggling musician Makoto receives some outfit made by chance acquaintance Miyama, a world-renowned designer. However, the bewitching aura that Miyama has on and the caress-like touches of Miyama’s fingertips end up arousing lust in Makoto…?

Saeki thinks of herself as a lazy, boring, and apathetic person and has no idea what to write in her future-plans survey. Kurata, of the art club, piques her curiosity by constantly sketching.

Young Shinichiro once had a chat about alternate realities with a local cat on a hot summer day. Years later, he discovered another cat who can speak the language of humans, and a door opens to a whole new world. Unfortunately, his guide to learning how to be a modern day Doctor Dolittle, is the unflappable and occasionally hostile Narusawa, who warns Shinichiro that his decision to learn how to talk to animals may have consequences beyond his imaginings. It all seems like fun and games at first, especially with the charming black cat, Acht, around to liven things up, but as Shinichiro and Narusawa grow closer, the complexity of both communication and the human heart begin to be revealed... -From Blu

This story depicts a yankee high school student and his aim to be a top voice actor.

From Seven Seas:
Meet Kanae, an introvert who is about to have her life transformed in the most unusual of ways: through music. For Kanae, her transformation begins when she accidentally bumps into Hina, an independent singer who releases her music via the Internet. As the pair become good friends, they quickly find that they've become one another's inspiration--in more ways than one.

Extra:
- A Special Friend
- Tobira (Opening)

From OMFGG Scans:

Humans with strange new powers have begun to appear. They are called Knockers. The Knockers are not without rival, they are being hunted by the mysterious being named Void!

Not adhering to any notions of good or evil, Void pursues the Knockers while being himself in the cross-hairs of government agencies BOOTS and the Public Safety Commission Section 5, along with mysterious pursuers like Shamonji the beautiful swordsman and the undead soldier Pale Horse, who arisen from the dead.

Just what is Void's goal, and for what purpose does he stretch his raven wings?

In a time where humanoids exist, Maki is being gifted by his friend one of the latest models, able to even imprint with their owners and form deeper relationships based on the memories they have received in the time of their fabrication. But the humanoid Arata Mizumori is not like any other model: he has inside him not only the experiences fabricated by his creators, but also the illegally-sold appearance and memory from a person named Amamiya Ren, who was once a person of extreme significance to Maki. Will he be able to tell Arata apart from Ren? Which feelings will the face, voice, and memories from Ren in Arata awaken in Maki?

joo seo-cheon, a man who survives the age of war through sheer luck and becomes hwasan factions elder only to live a life full of regrets and doubts. he then lies on his death bed waiting for the inevitable when he is returned to the past…

Vongola GP (Gran Prix) is spin-off series of Katekyo Hitman Reborn!, made by Takayama Toshinori. Manga introduces Tsunayoshi Sawada, called No-Good Tsuna who is descendant of world's legendary racer, Primo and his side-kick Gokudera Hayato. They battle on various members from the original Katekyo Hitman Reborn! plot.

A Spin-off of Hitman Reborn.

For the right price, no secret is safe! In the grimy motels and smoky back rooms of Tokyo, three men -- professional Cho, talented but unpredictable Ken, and clueless apprentice Smile -- have set up business as VOYEURS, INC., using the latest surveillance equipment and oldest crooked tactics to expose the peccadilloes, perversions, and crimes of corrupt and powerful men.