Zarmen, an adventurer who can't level up decides to retire from the adventurer business. Furthermore, in order to graduate from virginity, he decided to splurge on all the assets that I had diligently saved up since his reincarnation at a high-class brothel. The woman who appeared in front of him was the finest woman he would ever have known. Thanks to her hospitality, Zarmen fully enjoys his first time, but at that moment, his ears hear a mysterious announcement, "Impregnation confirmed.", "Level up!" "Does this mean that the more "seeding" you do, the stronger you get?"An extraordinary implantable foreign world adventure fantasy created by a bottom adventurer who has been at level 1 for many years levels up through sex!

Shota Iijima picked up erotic books during his childhood and suffers from a severe foreign sister fetish.

Thereafter, from the years between his age of 12 to 15, he masturbated 999 times. For his 1000th round of masturbation, he had been transferred to a different world.

And Shota is sold as a slave.

A paradise for women and hell for men… Valhalla, the penis mansion.

"Spring! My college debut! The blossoming of my sexuality! Even now, I can't cum without being harassed by them." An unfortunate story in the spring of youth.

On his way home from work, Aokai Seiji, a struggling actor in the JAV film industry, accidentally looks away and got hit by a magic mirror JAV Truck! He wakes up in a medieval-like world and gets caught up in the "filming" with beautiful elves?!

Having forgotten his keys, Tamao Hiroi a high-school student, returns home using the back entrance and is surprised to find a stranger in his bed… Soon he realizes this is no stranger but Ran Homura, one year younger, softball ace and one of the most beautiful girls at school! Hiroi watches her masturbating on his bed and instinctively does the same peeking through the glass door. He is soon found out though and a strange 'master/slave' relationship begins!

Na Hae-soo's life unravels when her husband betrays her with an affair, leaving her burdened with debt and losing their child. In a devastating blow, she witnesses him with a younger woman. Broken and despondent, Na Hae-soo feels her life crumbling around her. However, a mysterious young man unexpectedly enters her life, asking to be taught about adult love. His vulnerability and sincerity begin to stir emotions within Na Hae-soo, challenging her to reconsider her path forward.

High school student Gotou has a crush on his gyaru classmate Agawa. One day after school he sees her having sex with a classmate in an empty classroom. "A 100% pure romcom that starts from NTR."

Hisaya Minato, a normal high school student, has a female friend who is a bit peculiar. She is Aoi Hatsuki, the most beautiful girl in the high school. For some reason, they get along very well, and since they happen to live on the same floor, they gradually become good friends, coming and going from each other's houses. One day, Minato suddenly asks her to show him her panties. At first, Hatsuki is reluctant, but then she starts to roll up her skirt?

Do what we want, when we want, with the person we want. Such a relationship needs no label.

Murata and Tomoka, who are tired of their past relationships, become friends after sharing a game online and decide to go directly to a love hotel. After this evening, they meet regularly and have a good time together.

Healing magicians cannot fight alone.’ Keare, who was bound by this common knowledge, was exploited again and again by others.
But one day, he noticed what lay beyond healing magic, and was convinced that a healing magician was the strongest class. However, by the time he realized that potential, he was deprived of everything. Thus, he used healing magic on the world itself to go back four years, deciding to redo everything.
This is a heroic tale of one healing magician who became the strongest by using knowledge from his past life and healing magic.

A gun otaku dies after toying with a homemade pistol that explodes in his face. In the afterlife, he is told that he will be reincarnated into another world. When the otaku wakes up, he finds that he is no longer human - he’s now just some little furry thing. Near death, he comes across a beautiful warrior, who decides to take care of him because he’s fluffy. However, things take a turn when he finds out that firearms exist in this world?

From the writer of Time Stop Brave and Princess Resurrection comes a new isekai story, which has bears, boobs, and bullets.

From MangaHelpers:
People have been created that are human-animal hybrids, and powerful businesses bet on the outcome of their duels. College student Nomoto Yuuya's casual acquaintances ask him to drive them around to pick up girls one day, which he soon finds out means by force. The girl they kidnap is an animal-human hybrid named Hitomi, who slaughters all of them except Yuuya. Hitomi is a honey badger, which has been called the most fearless of all animals. Now Hitomi is assigned to stay with Yuuya, for his protection.

People called “challengers” are gambling their life trying to escape from The 100 Story Tower to win 10 billion yen. But what will happen when Tatsuki Kuroumi awakes at this tower without remembering anything about his prior life, including entering the tower as challenger?

More than ten years have passed since dungeons suddenly appeared on Earth. In a world where people with excellent skills play an active role as adventurers, the skill that high school student Takeshi Miyamoto has discovered is... "breast correction"!?

Takeshi is confused by the unique skill he has never seen or heard of. But there seems to be a surprising number of girls who need it.

One day at school, Youta Tada sees someone strange entering school. Out of nowhere this being appears next to him and makes him fall from the third floor! But before he hits the ground, he wakes up in a strange world where beings like dragons exist! Youta then meets a young paladin named Lumi and discovers that he is the only man on the entire planet, and also that its inhabitants are extremely 'weak' to his presence or more specifically, his touch. Would this be a paradise?

University student Kang Ji-ho, accidentally saw Seon Woo-hui's breasts at a drinking party, and avoids her because she couldn't resist the desire to see them again.

"Just give it to me straight. Why are you avoiding me?"
“…If I tell you straight up, won’t you get angry?”
"No. If you don't tell me, I'll kill you."

I-I mean...

“When I look at you… I keep wanting to see your boobs…”

At first, she thought it was a joke. But when she realized it wasn’t, Woo-hui decided to pull a mean prank.

"Shall I show you my boobs?"
“…Do you want to touch it?”

I, Sora Satou, woke up to find myself transported to what they call a "reverse chastity world." Although I was confused at first, little by little I adapted to this new world’s values and eventually ended up working at a supermarket across from an all-girls high school. Just when I had finally gotten used to life as an employee under the kind and beautiful manager, a rumor started spreading: "That male employee... they say if you ask him, he’ll let you do it." And so, a group of beautiful girls who took that rumor literally began to gather around me...

What am I supposed to do now!?

Hiiragi Utena, a girl who loves Magical Girls, lives her ordinary everyday life wishing to be like them.
One day a curious character appears in front of her and offers her the power to make her wishes come true, but…
Magical Girls vs. The Forces of Evil, the fierce battle begins!

That day, Ishida Yamada was working part-time as usual. When he opened the back door after finishing his part-time job, he found a blank space and a person who called himself God. It was by chance that he was chosen by God to go to another world. He was perplexed, but decided to live anyway. Thinking about how to survive in this other world using the skills he received from God, he tries his best to have a physical relationship with a beautiful woman in this other world.

When the Devil King announces his retirement, he calls forth his two sons, Yomi and Sora, to give them each a quest. Whichever of them finds a pure Yamato maiden within a year would inherit the throne of the Devil King, while the other would die. Thus begins Sora's sex-fuelled adventure to find a woman that can satisfy his father...
(Sakigake!! Otokojuku Wiki)