College student Otonari Otoya is a boy who lacks self-esteem and dreams of being reborn into a different dimension. One day while playing a [video] game, he accidentally clicks on an ad, and trips into another world?!?!
He's surprised but delighted, until he realizes that something's strange. A whole group of guys are treating him too kindly, almost like he's a girl! Could it be that the world Otonari was transported into... is an otome game?!?!

A veteran adventurer was preparing for his retirement when his former disciple returned to the village, intending to recruit the old man to his party. Filled with regret due to an incident that happened in his first party, the old man rejected his offer. Being affected by his disciple’s adventurous spirit, the old man leaves in hopes of reigniting his long-lost dream, to become the strongest adventurer that ever lived.

Ruu Brandel, a genius wizard with a talent for thousands of years. One day helped a beautiful aristocratic daughter, Franc and was to be assigned to “Magic Girls' Gakuen” where he acts as a teacher! Now, the “non-standard” teacher life by the strongest wizard opens!

(Source: MangaUpdates)

"Ecchi stuff that also may have a story...."

The Demon King led his army of demons to wipe out the human race. The Hero, Kail, and his allies attacked the Demon King's castle to defeat the Demon King. The Demon King is slain, but at what cost? Kail lost all of his allies throughout the war. Friends, family, lovers, comrades. All dead, and he is dying.
As Kail's life ebbs away in the Demon King's chamber, he notices a strange gem that the Demon King had coveted and approaches this relic to grab it; after an intense light glows, he is sent years into the past. After recovering from the initial shock, now in his younger body, he decides to avoid making the same mistakes of his first time through these years and to become stronger.

The manga focuses on a hero who is married, but monster girls seeking children of heroic lineage keep coming after him to steal him away. The hero's wife chooses to deal with the monster girls herself.

Manaka Makoto, a 24-year-old salaryman without a girlfriend, wakes up one morning suddenly changed into a female, and a knockout at that who attracts just about everyone of the opposite sex. And when he learns through a magical being that the only way he’s going to become male again is by getting aroused (as a woman) he tries to find a way back without any success. But when success finally comes and he switches back, he discovers that he will switch back and forth ANY time he gets close to someone sexually, and there are exceptions…

A world where wars are fought with spies. With a mission success rate of 100%, the remarkable, yet rather difficult to deal with, spy Klaus is being tasked with an almost impossible mission by the agency, harboring an insane 90% chance of failure and death…which for some reason involves eight inexperienced girls?!

The story begins with Yggdrasil, a popular online game which is quietly shut down on its last day. Our protagonist Momonga decided to stay until the last moment in his beloved game and wait for the force logout. Unexpectedly, the server did not shut down and Momonga is stuck in his skeleton body and got transferred to another world. "The powerful Overlord" needs now to discover a new world and face the continuous challenges.

Having no parents, friends, or place in society, this ordinary man strives to take over the new world the game has become.

“If my true heart leaks, I wonder what feelings I will convey...” In this world, if your dissatisfaction rate reaches a certain level, your "Split" will satisfy your desire for you; Fission Syndrome.

Makoto, a first-year high school student who fears Splitting and confessing to his crush, was accustomed to keeping his feelings hidden… Until, one day, in front of Makoto's eyes, his crush develops Fission Syndrome?! Moreover, it was a terrible Split that appeared...

Received a grand prize at the 3rd Manga Box Editorial Club. "I can't hide my thoughts in this world," the Split Love manga is finally published!

The one who defeated various ranked dangerous monsters, the one who sealed 6 demon lords, the one who is onlooked by God. Elm, the dragon knight who wields several legendary equipment, humanity's strongest man, has continued to work for the Bangs kingdom. He accepts SSS rank requests, but he is mocked with the name "Subcontractor Knight". He continues this harsh labor, until his dragon partner, Baha, suggests for him to retire. So Elm and Baha depart for an unknown location to start their slow lives…

Having become overwhelming strong, a mage was bored with his life and decided to reincarnate in another era about 1000 years later.

But after reincarnation, the mage now known as Kurt saw a world where magic had declined, and the mages of the era are overall much weaker than those of 1000 years ago.

It also seems that Kurt is being looked down upon for his "Gold Magic" as it is called "Defective Magic Power" in this era.

In order to investigate the mysterious decline of magic in this era, Kurt enrolled in the Magic Academy at the Royal Capital and showed his extraordinary talent where he would become unparalleled in this second life of his too!?

Inspite of defeating the demon lord, the hero Noel Viga was betrayed by his friends and his kingdom. “I don’t care about anything anymore! I’m going to live my life the way I want to!”. The second life of the former hero begins.

Our protagonist Oroku, is the son of a female knight and an orc. Due to his appearance taking more after his mother, he was harassed and bullied by the orcs of his village. After meeting a beautiful elf and other demi-human girls, and being rejected for his lineage, the strength of his blood awakens and plots a plan to become the strongest warrior in history in order to make a harem of beautiful women.

On the Journey of Self-cultivation, One Requires Control of Ying and Yang , Good Fortune, To Reach for Nirvana, Mastery over Life and Death, Power over Reincarnation. At the peak of Martial Arts, break the Heavens and shake the Universe!

Extras die every day in various ways in the game [Demon King’s Palace 3].

He was an extra when he reincarnated into the game.

I’ll never die. Never.

“Let’s get started.”

Evan had come to a conclusion. He tapped his cheeks as a way of signaling to himself that he had made up his mind.

He would become a character who never dies.

A story from the creator of Aho Girl, and Mangaka-san to Assistant-san. High school boy Naoya gets a confession from Momi, a cute and friendly girl. However, Naoya already has a girlfriend, Seki... but Momi is too good a catch to let go. Momi and Naoya's goal becomes clear: convince Seki to accept being an item with the two of them. Will she budge?

Haruo is a boy with three younger sisters and a parent-less home. Although he does not know, his sisters all know magic. Now, they hire a maid who is also a new transfer student. She also turns out to know magic...

Sakai Masako (31) is a sadistic office lady. She was reincarnated as a villainess in "The S-Princes' Party", an otome game where all captured targets are sadists. She made it her mission to change them all into masochistic subs for her.

Caught with a severe fever, Tobio Ikuse, a second-year high school student, was forced to miss his school trip on a luxury liner with his schoolmates. Four days later, Tobio hears the news about the disappearance of the teachers and second-year students from his school, and it devastates him. A few months after the incident, Tobio, having slowly recovered from the sudden loss of his friends, accidentally encounters one of them again. Chasing after his missing friend Sasaki, Tobio finally manages to catch up to him but is shocked to see Sasaki alongside a Lizard Monster who attacks him together with the monster. Cornered by the monster, Tobio is rescued by another survivor of the missing luxury liner, Natsume Minagawa, who then hands him an egg before parting ways. Later that night, Tobio finds himself under attack, again, this time by two people with monsters. Amidst all the ensuing chaos, out of Tobio's shadow, came out a Puppy that rescues him. After fending off the two monsters, Natsume once again approaches Tobio before finally deciding to take him to their hideout.