Nezumi is a girl who was raised as a hitman by the yakuza and grew up not knowing human love. An ordinary young man, Ao, knows nothing. They fall in love and start to live together, but the evil hand is close at hand.... This is a story of first love, so cruel and so sad.

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.

By the time he opens his eyes, Kubota Tamotsu (34 years old) has been reincarnated into another world. Moreover, as a 6 years old slave with “Level 1 Barrier” skill. To surpass his limitations and become a powerful Barrier master Kubota begins a hellish training, full of obstacles and struggles. — From “Let’s Become a Novelist”, a new other world fantasy starts!

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?

Kazuya Kagami never goes anywhere without the precious Sakura Obi his mother gave him. One day a beautiful, kimono-clad girl named Kiriha appeared before him. Kiriha naturally began to live with Kazuya in his room. Then there's Chisato, Kazuya's childhood friend with glasses and a ponytail, who meddles in his affairs. Soon there's also an overprotective older sister who seems to want to take baths with him. Jumble in a huge-chested priestess, a good-looking sorceress named Kokuyoura, beautiful women, and hot girls, and Kazuya's happy, embarrassing, confusing life 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.

A mysterious syndrome turns schoolgirls into homicidal monsters behind numerous atrocities in Japan. However, nothing is what it seems and when Chika Amagi is arrested for the brutal murder of five people, which starts a journey into uncharted and troubled waters!

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.

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)

The manga centers on Yūma Fujikura, a constantly bullied first year high school student. When a classmate named Ryō Ameri, nicknamed "Amelie," helps him out one day, Yūma tells him not to get any more involved, or else the bullies will target Amelie too. In response to this, Amelie only tells Yūma that he would commit murder for him if Yūma wanted.

A girl who calls herself a devil appeared before a timid student named Fumio Kijima. The girl claims to be a campaign girl from the demon world and she gives him the ability to “summon a room” from nothing but thin air.

At first he doesn’t abuse his power and uses it as a convenient ability in his every day life. But one day he is bullied by his classmates under an unfair pretext and is made to suffer. In the past he would have wallowed in misery and cried himself to sleep, but now he had a power to call upon.

“I will make them regret it!”

Using his powers to summon his “room”, he begins his era of confinement and brainwashing to achieve his goals.

She always lived by the rules. She thought her life had been honourable. She was loyal to the emperor, even at the cost of her life. But the only thing she got in return was the blade of the guillotine.

"Why? Why is it like this?" she kept asking before her death.

However, when she opened her eyes, she had returned to five years before she died.

"Was the way I lived wrong?" she kept thinking.

Sigrid decided to change her way of life. What to eat, what to wear, what to buy, everything. The way she changed led her to be the centre of everything. Although, everything eventually started to go back to the way it was. And so, Sigrid came face-to-face with her old rival and enemy, Veramud.

"It begins by making friends."

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

Masamichi Akita, a high school student whose motto is to live wisely, who meets Setsuna Rikudou, a high school girl with a violent supremacist attitude.

Akita is saved by Rikudou when he is tangled up with a delinquent, and is attracted by her overwhelming strength, asks her to teach him how to fight. However, Akita is devastated by Rikudou, who asserts that “violence is the only rule in this world”.

Akita's encounter with Rikudou leads him into the world of “violence”.

Gomi Jirou, a 29-year-old virgin, has spent the past 9 years nerding out with his work colleagues about anime during lunch and drawing erotic doujinshi at night so he can masturbate.

However, one day, this comfort zone of his is thrown into disarray by the introduction of a new colleague, Yumezora Kuroko, a bespectacled beauty with long, dark hair and a massive chest.

It only takes a moment to fall in love, just like how it takes a moment to lose your footing.

This is the story of a weak man's sins and sexual fixations.

Controlling the Queendom of Sevek’s female prison with the Power of the Kraken!

From the author of Akame ga Kill and Mato Seihei no Slave!

Rin's village getting attacked by bandits doesn't keep her down in the dumps for long! Picking up a sword housing an extraordinary pervert… I mean hero, Siegfried, she sets off on a journey of many bouts with various degenerat… ahem, heroes!

Raul who had defeated the demon king as the strongest hero should have become the savior of the world.

Having his treasured companions and family killed by power hungry aristocrats, he was executed with false charges brought against him by the princess. Just before his life collapsed, at last his heart fell into darkness.

...I will tear those traitors from limb to limb. Burn them at the stake. Sever them to pieces. Skewer them. I will kill every one of those bastards without mercy and make them taste hell's suffering.....!!!

Obtaining the power of darkness, Raul was revived. Sneering, he vowed revenge.

“Oh, I’m looking forward to it – from now I'll bask in their blood as I please.”

Several days after the hero's revival in the imperial capital where flowers bloomed in profusion, the parade that would advance towards tragedy began.

”Is it okay to kill people?"

A treacherous revenge suspense by Shiryu Nakatake, a newcomer to Bessatsu Shonen Magazine.

"Shun, if someone is converted, let him go and do nothing. He should be given a chance to be reborn."

"Grandpa, I hope he doesn't reincarnate himself."

In order to defeat several non-human monsters, the boy also became something non-human.

Shin Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him.... . until the five monsters killed his family.

When he finally loses everything and faces true hell, a dark "wish" is born inside Shun. He was reborn under the training of his grandfather, who served in a secret unit during WWII. Now, four years later, he appears in front of his fated enemy.

"I won't let ANYONE get in the way of my revenge."

Arisa and Aina are beautiful classmates who are famous for their dislike of men. Hayato, who happened to be involved with the two, will receive "special treatment" from the girls who are supposed to hate men―?! "I want to be a slave to Hayato-sama...

"I want to fall in love and conceive his child."

The long-awaited comicalization of the unpredictable rich romantic comedy has started!