Being flung from the world of Fate/Extra Kishinami Hakuno finds himself in a very strange predicament. Caster Route.

High school girl Hinako is living a quiet life in a seaside town, but she feels somewhat detached from her friends during the summer months when she is reminded of when her family died years ago. One day, she meets Shiori, a mysterious girl who reminds her of the ocean, especially when it comes to her translucent blue eyes, but Shiori soon reveals that she is actually a mermaid who has been looking for Hinako for a long time.

Links:
Author's twitter: https://mobile.twitter.com/naekawa_sai

Karna was a boy that was given the title of "Sage" from heaven, is scouted by the hero party that had great expectations for his skills.
However, his skill "necromancer" was creepy and he was immediately exiled.
Karna, who got lost on the road without getting a reward, had accidentally invaded the Demon King territory and was targeted by the demons!
Karna faced a demon with a mighty power, but defeats it with magic that overwhemed it by far.
A fearsome demon. Meanwhile, Cecilia the devil, who saw the whole scene, offers Karna a large annual salary.
And Karna decided to become an enemy of humanity as a magician with the Demon King army――.

The sequel to Elf-san wa Yaserarenai (Plus-Sized Elf), set up as the manga switched publishers from Wani Books to Akita Shonen.

You know the drill by now - Naoe is a massage therapist whose life is turned upside down when he starts dealing with girls from another world and their weight issues. But this isn’t called Shin Elf-san for nothing. You’re going to get fully-colored pages due to its digital release, as well as new scenarios involving your favorite chubby elf.

Get ready to get down with the thiccness!

From Stiletto Heels:

Dependant on her boyfriend of seven years, unable to communicate well with others, and lacking self-confidence, Miki feels like a bird trapped in a gilded cage. In the midst of all this she meets a callous young man named Kamaya at her post in the students affairs office. Although Kamaya seems to have no qualms about invading her personal space, he saves her when she's in trouble, and Miki gradually begins to see him in a new light.

Anthology horror series detailing the "Round of 100 Ghost Stories", an old folktale believed to originate from Japan. Often used as a test of courage where participants tell one hundred supernatural stories and blow out one candle then look at themselves in the mirror after they finish each story. When the one-hundredth candle is blown out, it is said that ghosts and demons are summoned to our world.

Once upon a time, in a certain country. A mermaid was brought to the castle. The strange mermaid with two legs was to be delivered to the king of a neighboring country... But when the prince saw her, he said, "You! Will you be my princess?!" And so begins an unexpected life together! How will the two (animals) love each other? A fairytale love comedy about two people who are in love, starting, starting...

The best-known VR game in the world, 'Kaillan'. A certified game addict well known in the virtual world, Ian. Despite having a Level 93 Archer character in the top leaderboards of Kaillan, Ian decides to delete it despite everyone around him telling him not to. All to convert to a hidden class he obtained by chance. The class he chose is the most worthless class in Kaillan, the Summoner class. If he wants to avoid getting an F in college, he needs to level up to his previous level within two months... Kaillan is notorious for its very cruel leveling system, where it is said to take over a year to reach level 100. His struggles to reach level 93 in only two months unfold... Level quickly, thoroughly and persistently. The legend of the 'Taming Master' begins!

A cat familiar goes looking for a kawaii mahou shoujo to save the world, but the chosen one is a rather special girl.

An office worker, Yuuto Aida, witnesses his wife's affair at home! When he jumps out of the house, he gets hit by a truck and is reincarnated in another world as a hero!! However, due to the misunderstanding about Goddess Reincarnation, he only had one skill, it was a skill that could captivate other people's wives!!

(MTL)

Bi-Kwang is a handsome young warrior who becomes a drooling mess whenever he sees a pretty girl. Out on the road he meets an extraordinary swordfighter with no name who is searching for a legendary master warrior. Bi-Kwang promises to aid the swordfighter if he lets Bi-Kwang meet his beautiful sister. Of course, it turns out the swordfighter is the sister, Hwa-Rin Dahm, and she must switch identities to keep the plot moving along. Bi-Kwang is immediately smitten, and thus we have a triangle involving only two people.

This manhwa was made into a MMORPG.

Hino is your average high-school student. Sakuba is an amazing, talented, honor-roll student. But when Hino discovers Sakuba's secret half-demon identity, his life becomes anything but ordinary.

A little brother-like secret relationship with his little sister!? A romantic comedy between siblings with a misunderstanding begins!

Akira, my stepbrother, was brought into my life as a high school student after my parents remarried. He is a cute boy but shy because of the complicated family environment he grew up in. I had a crush on my brother, so I always spent time playing with Akira for his sake…. He loves me… We hit it off, and the distance between us grew rapidly! I asked him,
"......Brother, do you like me by any chance?"
"Of course I do."
The misunderstanding between the two of us deepens. And finally, I realized that Akira was my "sister" and I was confused...
"I like the distance between my brother and me as we have always been. I'd rather be with you more than I am now."
Akira's approach to me, aiming to make us "lovers" instead of "siblings," has begun!
A flirtatious romantic comedy with a little sister who is too cute and carefree to be a brother!

Official Light Novel: https://fantasiabunko.jp/special/202111jitsuimo

Kikuru Madan, a monster hunter with excellent performance because of his particular job in the forest, decides to quit his job because he doesn't want to waste his youth. The reason he wants to quit was that one of his friends got married.

One day there is a new recruit. Enome the Guild Receptionist asks him to accompany Hitamuki Kyan the Lolipai Martial Artist to watch her back and teach her how to work. He accepts the request, half because he was worried about her and half because he wanted her to become his successor before he retires completely. Sadly, his plan to retire is derailed by Hitamuki being useless and always attracting some monster. Can Kikuru Madan retire peacefully, despite being saddled with a useless newbie?

Hunting erotic commentary enthusiastically!

The virtuous will definitely be rewarded!

This world judges the deeds and good karma of your previous life, and grants you a rank when you are reborn. The benevolent man, even surprising the gods through this, decides to be reborn as the son Alexander of a noble family, and thus starts his SSS-Rank life! Follow Alec's journey as he lives his life as a SSS Rank!!

Description from GANMA! :
Yuusuke, a 7th grader, is interested in his friend's older sister for various reasons.
The older sister, while a little strange, is a kind and caring girl.
She's mysterious, but is popular with everyone.
This is an ordinary comedy about Mayuri-san's mysterious everyday life.

Author/Artist’s Twitter: https://twitter.com/panzuban (Though it seems they do not/have not posted much about this comic)

An extremely beautiful adaptation of a story that held the 1st place in “Let’s become a novelist” both Monthly and Quarter Yearly.
A fantasy adventure about bonds forged with people in a different world.

The setting is a world, where everyone has eight skill slots.
In these slots people can put skills like “Strengthen arm ★” and “Fire Magic★★” from skill orbs, abilities which prove extremely useful for survival. The total amount of stars your skills have can never exceed your slots.

Our protagonist Reiji, worked as a slave that mines skill orbs, until 10 years old.
Along with his precious older sister, Lark, they worked gruellingly in the mines until one day, where the chance for rebellion occurred at the mine and Reiji got his hands on a ten-star, a so called “overlimit” skill, called “World Ruler”.
Reiji went from a powerless slave to having an ability that surpassed human limits, but in the chaos of the revolt, he was separated from the only person dear to him, his sister Lark.

“To regain his bond with her, to make her his true sister”, earnestly thinking so, Reiji’s adventure to distant places starts!

Sequel to Re:Zero kara Hajimeru Isekai Seikatsu: Dai-3 Shou - Truth of Zero.

A man was about to commit suicide and decides to search for a way to die in the internet, but then he found an odd site that asked a lot of questions and had a point based system that allows you to create skills and abilities for a character. He took interest in it and when he finished setting his character he was asked "You will now be transported to a world with the settings you choose, coming back is not possible, do you still accept?" Then without thinking much of it he pressed YES and found himself in another world with the skills and abilities he chose to have.

A young priestess has formed her first adventuring party, but almost immediately they find themselves in distress. Luckily for her, the Goblin Slayer chose that place as his next killing grounds--a man who's dedicated his life to the extermination of all goblins, by any means necessary. And when rumors of his feats begin to circulate, there's no telling who might come calling next.