The protagonist along with his step-mother, and 2 step-sisters are summoned into another world where demi-humans are the rulers as saviors, but its not to fight against a demon lord, its to fight an Undead Apocalypse monsters called "Dead Mell" that have overrun the world and that can only be killed by using weapons made with holy silver.

For that, a familia is made (group of 4 people) with them being the swordmaster that uses the holy sword, the guardian that uses the power of earth to protect, the healer that use the power of water to heal and the black mage that uses the power of fire to destroy.
The role of the guardian, the mage and the healer is to support the swordmaster that can only kill the monsters.

But to use magic powers one must offer part of your being as a sacrifice to form a contract with spirits, and the higher the sacrifice, the higher the power. Now they must choose who are the 3 that need to sacrifice part of their bodies to gain power and who will wield the holy sword.

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.

After their first night, her husband departed for an expedition without another word.

He comes back three years later, this time as a famous knight in the whole continent.

How would Maximilian face him on his return?

"The more I think of you, the more lonely and lonely I become. I don't know why I can't quit even though it's so painful."

Completely defeated by dating apps, the heart of salaryman Kamoi Kousaku (35) has grown weary. One day, on a whim, Kamoi visits the antique shop Junk Temple Hall. There he meets the beautiful female shopkeeper Yomi. Though she exudes a mysterious atmosphere, in reality, she's a poor shopkeeper who forces junk onto customers! Will Kamoi, who's being ripped off by Yomi with outrageous prices for junk, be able to seize happiness!?

Poor Mugi Tadano! Heartbroken after his girlfriend moves away, he takes a summer job at his friend Kazuki's beachside snack bar/hotel on a tropical island. It seems like the perfect plan - until he meets Yuu, who might just be the cutest person that Mugi has ever seen.

Tōyama, an unassuming high school boy who is introverted, is walking the streets at night in search of contraceptives while having sex with his girlfriend, Takai Yumi.

He finally finds a condom vending machine.

Just when he thinks he finally found a condom, his classmate Marika Uehara, a beautiful girl in the upper caste of his class, sees him.

After that, he was a little annoyed that Uehara tried to involved with him in any way.

Uehara, who he hadn’t any contact with before even though they were in the same class, was starting to take an interest in Tōyama.

Kouta, a high school boy whose father is the chairman of the Higashiyama Group, a large corporation involved in the development of railroads, department stores, and resort facilities, plays the leading role in a romantic survival game. As the son of his father's 23rd mistress, Kota doesn't really feel like the son of the chairman. Despite this, he's suddenly chosen as the next chairman of the Higashiyama Group and is assigned a girl to be his mistress.

Author's Twitter: https://twitter.com/sansyokuamido

Office worker by day, pink lady at night and her third face... deadly! She is beautiful, dangerous and determined to clean-up her city from the scum that cross paths with her. Follow Yuki in her adventures as the Pink Salon Sniper!

What happens when next door to Fujiwara, an upcoming mangaka, moves Yuuki, who was his teacher back at high-school and first crush? Yuuki, a married woman now is starting a new life in the city but her husband is always away on business so she finds comfort in the company of her former student but what she doesn't realise is that Fujiwara can listen to everything happening in her apartment through the building's thin walls.

Hayato is a young deity with a foul mouth who has always heard legends about Demons that were sealed away about 800 years ago. Follow the epic saga of several young deities, who end up having to fight demons, humans and overcome several challanges.

A remake of a web manga of the same name with new art by Cool-Kyou Shinja.

From MangaHelpers:
In this world, there exists individuals known as "Majin": supernatural beings able to wield unique powers. They live among the normal human beings, but the divide created between the Majin and the normal human race is severe. There exists a school known as Dangerous, where the population ratio of Majin students exceeds that of any other high school. In this school, two groups known as the "Banchou Group" and the "Seitokai" face each other in war, but they have created a balance of power, resulting in a temporary peace. Now, with the inclusion of new students, this balance of power is about to collapse. One of the "normal" students, Ryouseiin Otome is forced to choose sides before the beginning of Armageddon.

A housewife and her daughter's friend have a little affair. Will they be caught or will it end as just "sex-friends"?

Aldred, the leader of a kingdom’s A-ranked party,『Black Silver』, has accomplished the task of slaying a dragon. However, he who has pursued strength his whole life has lost sight of his goal from taking down a monster of the strongest species. As he worried about what to do next in his life, it was the scenery of Nordende that popped up in his mind; A rural village by the countryside, full of natural beauty, which he only visited once during a quest in the past.
After declaring the disbandment of his party, he heads towards Nordende for a comfortable, relaxing life.

After he and his entire class die on a field trip, Odamori accepts an offer from a mysterious man to be reincarnated. However his new job turns out to be that of a 'Slavemancer' with the power to dominate the minds of others and turn them into his toys, which he happily takes on. Soon however his evil actions lead to a Princess Knight (who turns out to be one of his previous, more popular classmates) being dispatched to apprehend him. But Odamori of course has something different planned for their reunion.

Ryotaro is a boy who loves robots and lives out in the country with his three sisters, but he's headed to Tokyo for high school. Before leaving, he runs across a humanoid military robot and has a fateful encounter with its pilot, a cute teenage girl who calls herself La Vie en Rose. Ryotaro will almost certainly meet her again in Tokyo, considering his family connection to the production of these humanoid robots--his father worked with them.

The "violence gun action" manga's story centers on a dual gun-wielding protagonist who makes makes a deal with the devil to reap the souls of sinners. [ANN]

A prestigious school where only girls can attend-Winebirds Royal Magic Academy. A boy visited there. His name is Noah.

It was called as the first male student to co-educate the school.
Then, he started living together with a problematic beautiful girl, Anya.

However, his pure smile and non-pure tentacles created various ripples in the school...!!!

"Become a hero!"

With that dream in her heart, Shirumiruku Eru became an adventurer. But because she had no special skills, she struggled to find companions. That's when she got the chance to join the dungeon investigation led by Yuris, a great sage who specializes in healing. However, rumor has it that all adventurers who accompanied Yuris have had their spirits broken and abandoned their path as adventurers halfway through... You see, Yuris had a bizarre interest in getting excited by the sight of female adventurers being attacked by monsters.

Kay Brennan is a hero, no doubt about that. They're the strongest person in their school in terms of combat strength and magical power. Compared to Kay, Dino Turner - the eternal 2nd place - might as well be nothing, and as such Dino has declared Kay to be his archrival. However, Kay has a secret: she's actually a girl crossdressing as a boy. And Dino is the only one who knows her true nature.

A 29-year-old single man is transferred to a different world to improve the "agricultural skills", starting with a chilling home vegetable garden in the secluded forest!

22-year-old Rin has two major problems: a complex about the tattoo-like birthmark on his butt and a crush on an older woman who thinks of him as her little brother. Rin hasn't allowed any woman to see his naked bottom since an incident when he was seven, which firmly entrenched his shame about his birthmark. When he finds his birthmark may grant him mystical powers over the opposite sex, will he finally be able to use his butt to his advantage?