I accidentally summoned my ancestor! How do I return him safely...!?

Sou Kagura is enjoying his life as a new high school student until one day when his parents abandon him due to a large debt they had amassed. To get rid of their debt, they essentially sell him to Mikoto Ouzuki, a wealthy land developer who wants Sou as his sexual pet. However, Sou's older sister Ui intervenes with a proposal: If Sou can pay back the debt in one year, he's off the hook, to which Ouzuki agrees. What Sou only finds out later on is that Ui's plan is to open up a maid cafe with him as one of the maids under the name "Kanade".

hiasa and Kazuma have been dating for eight years, when one fine day, their free-spirited childhood friend Tomoe comes back into their lives. What's more, she's pregnant. The two guys welcome her back with open arms and hearts. Eventually, when Tomoe gives birth to a baby girl, they treat her as their own daughter. But what happens when Tomoe decides to fly off, leaving her infant daughter in Kazuma and Chiasa's care?! This is the story of two gay men and a baby!

From Lezhin: To Sungchoon, seeing how much asset a person has and will have in the future comes in handy when dealing with all kinds of situation. He then meets Jihyang, a daughter of a conglomerate and approaches her, hoping to change his fate of having to live paycheck to paycheck. Little does he realize that Jihyang also has the same ability. Original Webcomic http://www.lezhin.com/ko/comic/moneylover

Antisense Scanslations:
All demons desire to become part of human society, but what's a demon to do if he's so powerful he's too worried to touch anyone? Or if a bird demon who can't walk wants to visit someone's grave? With the help of a friend, a boy helps the demons that cross the gate.

From Lezhin: Eunsung one day wakes up to find out he's a girl! He's able to hide his change of gender from everyone... or so he thought. His secret is discovered by his crush on day one and moreover, she asks him to pose as a nude model for her! How will Eunsung's life start anew as a girl? Original Webcomic http://www.lezhin.com/ko/comic/girl_birth 

The continuation of the adventures of the Ouu army. The story is centered around Weed's children ? Sirius, Orion, Rigel, and Bellatrix and several other children of Ouu's veterans. New characters have been introduced such as Kurohabaki Masamune, the current main antagonist and leader of the notorious Kurohabaki Clan.

Source: Ginga Wiki

Young Risa-chan is eager to grow up. Feeling no connection with her classmates, she becomes close friends with her older neighbor Megumi-san, who is kind, beautiful and 'several' years older. As they spend more time together, Risa starts to wish for a more adult relationship with her. Then her Mom goes out of town for a few days, what opportunities will a 3-day sleepover present?

1/100 000 – A story about a destiny between the lines of cruelty and joy by the master of pure love romance Kaho Miyasaka.

2nd year high school student Rino Sakuragi has been in love with Ren Kiritani, a member of her friends-circle since junior high.
Rino, who cannot love either her character nor body, is incredibly shy towards the popular Kiritani.

“Being friends suits me just fine. After all, I don’t want to be hated once he gets to know the real me…”

Even though she’s resigned herself to that, she cannot help but stay in love with Kiritani as he keeps on dropping suggestive lines like “Cute.” or “What do you think about me?”…

“I want the person I love to really get to know the real me.
But because it’s the person I love, I need more courage!!”

A heart throbbing, royal fantasy comic on the romance of Moo-young, a fierce beast who disguises as a puppy to gain love; and Hwa-yeon, a girl, who raises and trains a large puppy, oblivious to its real identity.

WARNING: Foolish girls and boys are conveniently stationed at every twist and turn. Enjoy~

A 4-koma drawn up for the game Valkyria Revolution by SEGA. Sadly the artist and author were not posted on the website. Original raw: http://portal.valkyria.jp/azure/comic/

From Bunny's Scanlations and Must Be Endless:

One day, up-and-coming young photographer Franz Schumann makes a fateful encounter. A beautiful young man with jet-black hair, eyes that show traces of a fresh grief, white skin like porcelain that, though it’s decorated with numerous bruises, is still sublime: Jay. He won’t tell the whole story of where he’s from, and Franz, wanting to keep the mysterious Jay as his exclusive model, as time passes, begins to fall in love with him...

Unity of Heaven and Earth is an action-packed manga set in a fictional modern society. It features the characters from Journey to the West, but all completely different. Introducing the master-turned-loli San Zang; the dragon-turned-horse-turned-beautiful woman White Dragon Horse; the pig-turned-Adonis Pigsy and Sun Wu Kong, who has been reincarnated as a human. All of your preconceptions from Journey to the West will be turned upside down!

For a normal, boring high school guy names Brian, life is about to get a lot less boring. Something strange is happening around him, and it might have to do with his energetic childhood friend, Suzette, who out of nowhere wants to form a band and won't take no for an answer. Every time she plays music, strange things happen, and when they two new band members, the reality around them will never be the same again. 

From Lezhin: A professor living a successful life with a secret. Two students who each have a hold on their mentor: one who knows her secret and another who reminds her of her first love... Winner of LEZHIN's 1st BIG 4 Comic Contest Original Webtoon http://www.lezhin.com/ko/comic/serenade 

In fifteenth century Rome, witches have declared war against humanity. A young man named Nikola, whose parents were cruelly murdered by a witch before his eyes, discovers that he is now the key to winning the war. Using sorcery skills acquired through years of careful study, Nikola must revive twelve witches known as the “First Witches” who will become his allies and weapons to defeat the enemy. But there is one small hitch: in order to revive the witches from their eternal slumber, Nikola must form a marriage contract with each one. Just how many witches can Nikola marry in order to save the world?

The story takes place in Meiji Era where Omegas were mistreated and despised for having their heat period.

Maya an Omega, with an unusual color for a hair captivated an elite Alpha named Seiji.

Amano works in a hotel that caters to visitors from the other realm. When Tsukiyomi, the king of the other realm visits the hotel, Amano discovers the truth behind the disappearance of his childhood friend, Mitsuki.

Note: Polar Night is a reprint of Mangetsu no Ou, but with corrections, 36 additional pages, and the inclusion of doujinshi the mangaka wrote after the main story was first published. However, it does not contain the unrelated oneshot, Jet Leg, which is included in the tankoubon for this series.

From Chibi Manga:

There are storms for my love with Sensei!?