Dirty oldman isekai

Fantasy harem-comedy begins with a kind-hearted uncle who helps the weak, crushes the strong while doing some consensual seeding here and there.

One day, Sanada Shirou, who works for a black company, is transported to another world. Using his "creation magic", an ability he gained when transported, he opens an inn and is supposed to lead a slow life, but this other world is a little strange?! It is a world where women are overwhelmingly dominant, where women do dangerous work and battle, and men are powerless and are protected! The daily life of entertaining (in many ways) the women of this other world begins...!

Web novel: https://kakuyomu.jp/works/1177354055503576578

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled….. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.

Ao Sato is accidentally swapped with himself in a parallel world with a male/female ratio of 1:39.

He finds a kind family and lovely women at the place where he was switched.

Seeing the outside of these women, he's relieved to see that the number of men and women has changed, but not much else.

However, their inner lives are filled with conflicts and troubles.

From a caste based high school, bottom-tier Shinji Naomi is caught up in a summon of his class to a different world. However, as soon as they arrived the king said, "This guy is unnecessary because he only has clumsy skills " and it is concluded that he is to be forced to administer the orphanage, which no one wants to do. Unfortunately for the orphanage his skills were cheat skills that cause the girls to cling to him.

In order to "defend" the girls that depend on him, he must operate the orphanage while overcoming the powerful people, authorities, and former classmates that surround him.

Will a boy without any motivation be able to save the world?

The Assistant Mage of the genius alchemist Ruby—Lloyd has an abnormally low chance of gathering materials for alchemy use. Hence, he is treated as baggage and is made to be the bottom of the entire country’s joke.

Everyday is a day he is scolded by Ruby. It’s become too much of a despairing environment that he’s come to hate it. And so, he finally decided to part ways with her.

However, unbeknownst to everyone was that the materials Lloyd gathered were all high-grade materials no one else could gather.

The mage, who was treated as “incompetent” and saw himself as such, now aims for an ideal easy going life!

Yamada was hospitalized after breaking both hands, to make things worse, due to a unknown condition he has to ejaculate every three hours. The ward is full of evil nurses. Will Yamada be able to live and be discharged from the hospital?

TLDR: Guy has busted hands, gets sent to hospital for chronic ejaculation, guy gotta get his nuts busted by busty whacko nurses.

High school student Boji Nichiro is isolated from the rest of the world due to fierce bullying. One day, however, the world is transformed by the "dungeonisation" phenomenon! In the midst of the chaos, Nichiro awakens the unique skill "Shop". It was an out-of-the-box skill that allowed him to buy everything from food and daily necessities to unrealistic items! The start of a painful and "wacky" modern fantasy from "Shosetsu-kaerou"!

After falling into the ocean, Wataru Toyoumi, finds himself reincarnated in another world! Armed with a skill to allow him to summon boats he plans to get rich and live a happy life aboard his very own luxury liner.

Shiina Kazuya, our protagonist who got killed by a stranger when he tried to protect his childhood friend and little sister, reincarnated into Cain Von Silford as the third son in the world of sword and magic.

Cain grew up being surrounded by Gods who doesn’t know self-esteem, the upper noble and the girls who are swayed around him.
Being given so many protection from the gods, He overcame any obstacle (aka Flags) while hiding his unbelievable status. The noble path fantasy story of a young boy who sometimes wicked and clumsy.

Takuma Hirose is a young, male high school student, who is blind for unknown reasons. After his mother died an unexpected death, it left a deep emotional scar on him, which caused him to become very lonely and reserved. Due to this, Takuma and his father move from the city out into a rural area and Takuma is enrolled into a new high school. At his new school, he meets several new girls, three of whom he gets to know the most out of anyone else. They are, the firm and obstinate Hayami Kohinata, the kind and obliging Hinata Kagura, and the cheerful and mysterious Otoha. As Takuma interacts with these girls, his medical condition gradually begins to heal.

Imaizumi is a high school boy who lives alone in his apartment for a reason. He has a secret that he can't tell to anyone. And the secret is that he lives with the top three Gyarus (gals) of his school, Hamasaki, Kurumozaka, and Sasaki. He spends his day playing, talking and getting physical with these Gyarus, all of whom have a quirk or two. Imaizumi-kun is getting more and more addicted to his lazy, naughty and free "youth"...?

"Although she's the daughter of a baron, she became an adventurer?!
After dying in a dungeon, she woke up alive again with a new life waiting for her!
Is she a saint? or is it a misunderstanding?!
The adventure of the poor misunderstood saint Sophia has finally begun!"

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!

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)

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!!

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.

Suddenly appearing in a different world, it looks like I got caught up in a Hero Summoning. And of course, I’m not the Hero, but it’s another guy……and while being very cautious and scared of the cliche of the cliche-like development, I was thrown into the maelstrom of war……or not.

The Demon Lord? It was defeated a thousand years ago. Hero? He’s just the main actor in a festival. Nobles? They’re kindly taking care of us. The Demon Race? They have good relationships with Humans. Wars? It’s already 800 years since the last one. Monsters? The Guild and Order of Knight are taking care of them. Return to Earth? It is eventually No-Risk.

What I’m planning after being caught up into this? I’m gonna enjoy the life in a different world as much as I want to, go on a cultural exchange and sightseeing, and after experiencing the festival that is only held once every ten years… I shall go home safely.

The other world was at Peace.

A kind world where the three races, the Spirit World’s Magical Races, the Celestial World’s Divine Races, the Human World’s Human Races, they are kind neighbors to each other, with everyone living a peaceful and fulfilling life.

But although I wished to peacefully spend a year before my return, for some reason, the heavyweights of this world keeps gathering around me, and…