From ADV Manga:

On the planet Aqua, a world once known as Mars, Mizunashi Akari has just made her home in the town of Neo-VENEZIA, a futuristic imitation of the ancient city of Venice. The technology of "Man Home" (formerly Earth) has not entirely reached this planet, and Akari is alone, having no contact with family or friends. Nonetheless, the town, with its charming labyrinths of rivers and canals, becomes Akari's new infatuation, along with the dream of becoming a full-fledged gondolier. Reverting to a more "primitive" lifestyle and pursuing a new trade, the character of Akari becomes both adventurous and heartwarming all at once.

From Fallen Syndicate:
Sylph Anthology containing short illustrations and comics.

Part 1: Fairy Tales
Part 2: Tales of Old Japan
Part 3: Western Literature
Part 4: Japanese Literature
Part 5: Myth & Legend
Part 5.5: Special Chapter

Adventure of 3 teen bounty hunters. Sora, Brogy and Lisa!facebook.com/bountyhunterzcomic New chapters every 2 weeks

Hirose Goushi has a huge sister complex. So huge, he moves from his home town to Tokyo to attend Myouzen University in order to escape it!
Three years later, Goushi's little sister Noa shows up and informs him that she's taking the Myouzen University entrance exam and that she will be moving in if she passed. Little does Goushi know, she has a similarly large (if not larger) brother complex.

This manga is deemed to be one of the works that initiated the "irrational" or "unreasonable" gag comic genre where the reason of its funniness cannot be explained by logic and traditional sense of humor, which made this title very popular among teens and early twenties at that time.

From 3829

Dai Hong is dead or alive, or maybe alive or dead? In the end, will he choose his childhood friend, or this outsider, who happens to be?.a magical girl?

Karin Sakuma is a 16-year-old girl whose idealized standards for the perfect guy have left her without ever having a boyfriend. This importance on how something looks even extends to things she buys, often without practicality in mind. One day, Karin's mom sets her up on a blind date with Takuma Morino, a guy who satisfies all of her requirements, but she later discovers that he is also overweight. Although Karin doesn't initially recognize him, she and Takuma had once played together as kids, during which time Takuma developed feelings for Karin and asked her to marry him, to which she nonchalantly agreed. Although he asks her to marry him again, she turns him down, but Karin later tells Takuma that she wants to spend more time with him to see what will come of it.

Some robots go trick-or-treating.

Ashihara Himari hates men. Or rather, she doesn't understand them. In order to alleviate this problem, her friends decide that she should confess to someone. But what if that someone unexpectedly agrees...?

N/A

An ordinary, bored, bullied high-school boy. A mysterious, frail and cute transfer student who just happens to be a feared delinquent and studies the Chupacabra. They meet and start going out together. What can go wrong?

From Agent of Change Translations:

Sasakura Hakka, 14 years old.
One day, when I got home a strange creature in a Kigurumi suit, Ginger, was standing there!
It seems like Hakka has been chosen to rise with her comrades as, Guardians, to protect this world from the evil invaders of a different dimension, but...
The Kigurumi suited creatures have suddenly transformed into gorgeous male eye candies!? A heart-pounding, action packed Kigurumi Adventure!!

From Evil Flowers:

They say the world is going to end in five days. Now what to do until then? Follow Fuji, Touko and Nitaka on their last school days preparing for the end of the world. Meanwhile, Niino, a clumsy devil, announces that she’s going to destroy the world in five days from now. The hilarious chaos is complete now.

In a world driven by fictionalized friendship, courtesy of the program named "Real Account", the table suddenly turns, and the cybernetic world turns real! How will they survive?

Note: So... This manga is technically a two part... the first 10 chapters are part 1 and the 11 onward is part 2. In the past it's been split up into two series(Real Account & Real Account II).

The collection of anthology from Are You Alice? by various authors. Part 1) The Mad Hatter's Magnificent Holiday by Inui Miku

A series of short stories about business men in a romantic relationship.

Volume 1:
1) Sebiro no Housekeeper 1
2) After 5 PM Wolf Man (continuation ch1)
3) Dr. Arima's Medical Records 1
4) Not Ready?! Sensei 1 (Prequel of Not Ready!? Sensei)
5) For Whom The Bell Tolls
6) After 5 PM Wolf Man 2 (continuation ch2)

Volume 2:
1) Sebiro no Housekeeper 2
2) Dr. Arima's Medical Records 2
3) Not Ready?! Sensei 2 (Prequel of Not Ready?! Sensei)
4) Sebiro no Housekeeper Extra (New Edition)

From Fujoshi Bitches:

Takemiya is working as a secretary for the Young President, Iwase. Iwase is an amazing guy who has a huge gap. Compared to his gorgeous looks and capabilities, he’s an airhead and his honest side is totally cute! The younger dog, Takemiya, is madly in love with that President and always gets led around by him, but…?! The dog suddenly returns the favor clumsily saying, “President, I want to hold you.?!"

There is also another story about a high and mighty master president×beautiful “pet” secretary.

From MangaHelpers:

Aizawa Katori goes to a school with an unusual rule. The nearby, separate school building is full of elite male students, and the school wants to prevent any of the female students from getting involved with them. For this reason, all the girl students are required to wear masks! Katori wears a horse-head mask, but she hasn't given up on getting through to her long-ago childhood friend and crush, Shinra. Shinra also has a crush on Katori from when they were children, but he does not recognize her as the strange horse-headed girl who speaks to him! [tethysdust]