From MangaHelpers:

There is a hidden island that is a mecca for martial artists. There are different reasons people go there--because they want to become amazing at their art, or simply because they come from a family known for martial arts and they are sent there by their parents. In any case, new arrivals sign a contract that they can't leave for 10 years, and that contract is strictly enforced. Within the complex, there is a forbidden area...

Ro is a new arrival, and he was hoping to hone his skills. However, it seems to him that he's gaining nothing, and is just being required to drag himself down to the level of his inferior peers. One day, he opens the door in the forbidden area, and finds a boy who had been trapped there for ten years. The boy remembers little of his life before, and Ro names him "Kid." Kid is determined to leave the complex and search for his father. Maybe if Kid can get help from Ro and other new friends he makes, such as a sad, bullied young girl named Mugi, he will be able to begin his search! [tethysdust]

Lately in this neighborhood, there have been several sightings of a suspicious man around 40 years old. Several female students are being followed. If you see a suspicious man, run away immediately. As much as possible, make sure you are not alone.

Original Korean Webcomic http://www.lezhin.com/comic/masterofdream

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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!!

A collection of strange horror stories in the vein of authors such as R.L. Stine, from the master of absurdist horror, Takahashi Yousuke.

From: Easy Going Scans and One Snowshoe
The Onishi family doesn't have a father anymore. They don't have much money. They don't even have a shower. Tenohira Size presents eight stories of a mother and her three children's day-to-day lives in the aftermath of divorce.

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.

When a mysterious so-called meteorite crashes, a group of students gather to go and investigate it as part of their club activity. Low and behold, the meteorite is actually a futuristic, high-tech supermarket! What comes after is only weirder and weirder as they encounter more things that are out of this world. Follow these students as they go on supernatural adventures!

From Horobosu Scanlations:

"Seriously, I'll finish you within three hours."

That's what Kirishima Haru had in mind when he entered the virtual world of a dating sim. Haru's had it all since childhood - looks, charisma, good grades, athletic talent and girls, but in this virtual world, Haru would meet the only thing he wants and unable to attain. At the edge of the incomplete world, the love story of a player and a NPC unfolds.

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).

Yuuki Tsumire was raised by her single mother, who always told her to keep smiling, no matter what hardships she endured. The two of them were a family, until Tsumire's mother died from illness.
Tsumire soon learned that she had a family she knew nothing about: a cold, rich family that disowned her kindhearted mother when she became pregnant. Tsumire now must go live with this family, even though none of them seem to want her there. She doesn't have to switch schools, so she at least has her friends to help her through this difficult time. However, she doesn't have the heart to confide in her friends with even more problems, so she tries to keep it bottled up inside.
To her surprise, the Yuuki family lawyer, a young man named Hino, soon becomes her emotional support in this difficult situation. However, Tsumire's reactions to him might mean that she wishes he were something more.

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)

N/A

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.

Itou Kaiji is a bum who steals car emblems and slashes tires on what seems to be a regular basis. This routine changes one day when he is paid a visit by a man in a trench-coat. Once the two get talking, it seems that the visitor (Calling himself Endou) is a debt collector. The reason for his visit is an unpaid loan which kaiji had previously co-signed for a work-mate (Furuhata Takeshi). The original loan was 30000 yen and once Takeshi had disappeared, the loan then fell on Kaiji.

Kaiji is then told of a way to clear the interest compounded debt (which stood at 3,850,000 yen), which involved getting on a boat with others in his position. Once on the boat the debtors would then have to gamble with loaned money, which would end with a few winning, and others getting into deeper debt and having to work to pay of their debts. After some coercing kaiji accepts a position on the boat, in order to clear himself and make a bit of money as well...

In the 18th century, seeking "freedom and equality", the event that became the starting point of modern French society, the French Revolution, began. There was one more protagonist that lived within the darkness, Henry Charles Sanson. He was the fourth generation family head of the Sanson Family, and executioner of Paris.
This is the historie of him nobly facing the harsh fate.

Note: Was nominated for the 18th Tezuka Osamu Cultural Prize Reader Award in 2014 and for the 8th Manga Taisho Award in 2015.

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]