From Weblations Official Synopsis: The man-eating monster 'Infectee'. I became a monster. 

The manga is a re-imagining of the famous Journey to the West story, and centers on the Buddhist priest Genjō and his journey to India as he is accompanied by three beautiful and charming women: Son Gokū, Cho Hakkai, and Sha Gojyo.

A male engineer transmigrated into another world, and became a prince. This place strikingly resembles the Middle Ages of Europe, but at the same time, it seems kind of different? Witches truly exists, and they even possess magic powers! Magic powers are productive forces! Save the witches, liberate the productive forces! Open map, fight demons, break conspiracies, climb up the science and technology tree, and open the path of hardcore ‘farming’!

A space series about a protagonist who continually fights against all the aliens who are trying to take his life.

From Lezhin:
Once a world ruled by men, women stand up and fight to become men's equal. Now, in a land that is equally divided up between man and woman, the battle of the sexes is on! Who's going to win? But more importantly...what's the name of the game?

Jongli Chu, a warrior of the Death Heavenly Sect who killed Hwang Jung to avenge his older brother. In order to avoid the pursuit of Death Heavenly Sect, he looked to an assassin of the Death Soul Agency, Crimson Assassin, for help and got swept into a huge mess known as the Obliteration. In order to escape the shadow of the Obliteration, he had no choice but to become a legendary Death God! Can Jong Lichu become a Death God and find freedom in the stifling rules created by the orthodox sects?

Another short Twitter manga about an old couple turned young again.

A comedic take on the daily lives of students in a co-ed high school.

A world where cute girls become cards and fight.
And it's terrifying (happy?). In other words, you have to get the other girl to take off her clothes.
Use the girls, who materialize from the cards, and their intelligence and strength to win!
If you win, the other girl card is yours!
A harem is not a dream.
The long-awaited comic book version of this sexy card battle comedy is here!

A man awakes alone after 500 years of hibernation, his family & his belongings lost to a severe cold.
In a devastated land he searches for new meaning in life.
(Source: Twitter)

Housen is a painter of erotic art in the Edo period, who stumbles into a murder mystery involving women who have hooked up with one of his patrons. With the help of Tsubaki, a girl he runs into on the street who seems to know more about him than he does and is an artist herself, they start unraveling mysteries involving sex, murder, and occasionally the occult...

After losing his girlfriend to a brave hero, Toru is expelled from his S-Rank party. With a feeling of sadness and pain in his heart, he defeats a demon he meets outside the city, and his ability [to save experience] is broken! Toru becomes level 300 in the blink of an eye! With this power that far surpasses that of heroes, there is nothing that can stop him. Kaede, a slave he met on his journey, forms a group called the "Mangyu Brigade", and easily completes dungeons, acquires the legendary sacred weapons, and thanks to his skills, his friends level up easily! He rescued a countess who was attacked by bandits on the road, and befriended a legendary beast. Oru's journey continues at a leisurely pace, as he repeatedly encounters various people along the way, while his former party of heroes are deprived of opportunities to play an active role and fall into decline. This is the beginning of the life of a 300 level warrior!

Original Webnovel: https://ncode.syosetu.com/n9483ge/

A girl who calls herself the Demon Lord falls upon the main character, an elementary school teacher living in the countryside, and they decide to get married?!

A wandering prince is set break an ancient curse bewitching the Kingdom of Amaryllis by waking up its princess with a kiss of true love. However nobody told him there were 7 princesses to kiss and he must now take responsibility by live with them while they find out why the people of Amaryllis are unable to wake up. Will they reach a happily ever after?

Iori is a young man in his twenties who has been stressed at work, lost his cat that he had kept for many years, and is suffering from insomnia and loss of appetite. The next morning, he finds a beautiful, naked girl lying beside him...?

A humble man in his twenties suddenly dies and is reborn as the daughter of a duke in an 18th-century lookalike world where magic exists!
He is now living a second life as the adorable "Miranda Mirandiehl," who looks like a doll.
As he was always a "girl inside" with girlish interests, he accepted his reincarnation surprisingly easily.
And so, after being reborn as Miranda, he will enjoy his new life to the fullest!
What kind of encounters await him, and what lies ahead in his gender-swapped otherworldly reincarnation life?

4-koma about an otaku girl and her friends.

Hoozuki is a deputy of the King of Hell, a judge of the afterlife and a "Super Sadist," to boot. Follow the daily lives of Hoozuki and his people.

Note: Nominated for the 2012 Manga Taishou Awards.

On a harsh rainy day, a high school student without any particular special skills, Usato Ken got dragged into another world summoning with two others; a good-looking guy and a beautiful girl, both of whom he strangely started getting along with just today. As an especially talent-less individual that doesn’t stand out he internally thought that he would be treated as useless. However, the others were unexpectedly kind.

Usato who found hope in another world thought that, but the reality was different. He had a certain magical talent hidden in him and he was forced to fall into hell in the name of “training.”

The Nagare family had a happy home with three parents and three children. However, their son Kiritaka was secretly bullied at school. Then, an incident occurs, and the mother Mari's love for her son goes out of control.