Kosuke found himself in a whole different world. WHAT?
Standing there with the wilderness to the east and a forest to his left, he decided to make good use of the occurrence, and tests his knowledge, to where he finds this amazing crafting ability, just like the games from his orginal world!

Before I knew it, I was in a world of 18+ games with magic and erotica. In it, I was reborn as Ultos, the worst scum in history. If I continue like this, I will meet the worst possible fate. Somehow, I must be reborn from the hated character known as 'ScumUltos' into a pure and innocent mob character...!!

The story is an erotic comedy starring a strangely developed boy who, although he has a threatening look, actually has a very bad time when he comes into contact with the opposite sex. One day, after helping a mysterious girl, she says to him: Please, become my pet!

The Arisaka sisters (Hatsune and Kazuki) and the Kagura siblings (Yuuji and Marie) lived next door when they were smaller. So close that they could climb onto each other's verandas from the 2nd floor. They would always play together until one day the Kagura siblings had to move.
It's been 10 years and the Kagura siblings are moving back! Yuuji's turned into a pervert and Marie isn't the crybaby she used to be?

A wandering prince is set break an ancient curse bewitching the Kingdom of Amaryllis by waking up its princess with a kiss of true love. However nobody told him there were 7 princesses to kiss and he must now take responsibility by live with them while they find out why the people of Amaryllis are unable to wake up. Will they reach a happily ever after?

A 34-years-old NEET otaku is chased out from his house by his family. Unattractive and penniless, he finds that he has reached a dead end in life and realizes that his life actually could have been much better if he had made better choices in the past.

Just when he was at the point of regret, he saw a truck moving at a fast speed straight towards three high schoolers in its path. Mustering all the strength he had, he tried to save them and ended up getting run over by the truck, quickly ending his life.

The next time he opened his eyes, he was already reincarnated into a world of sword and magic as Rudeus Greyrat. Born to a new world, a new life, Rudeus decided that, "This time, I'll really live my life to the fullest with no regret!" Thus, starts the journey of a man yearning to restart his life.

Yajima has been able to see spirits since he was small. At his new school is a room that nobody else can see. And inside is a spirit who loves playing video games.

Noble young ladies were often said to be either rude and ill-mannered, or hopeless airheads with nothing but flowers in their heads.

Even in an age filled with such rumors, there was someone who taught them.

A commoner named Derrick, who awakened to his talent for magic and rose to prominence as a mercenary, is one day invited to serve as a magic tutor for noble young ladies.

As Derrick proves himself a star instructor— turning spoiled aristocrats into proper “people”— prestigious noble families begin lining up with offers of their own.

“There are no bad noble ladies.”

At least, not in front of Derrick.

Everyday is a normal day in the small town where Kasuga Arata lives. However, everything changed on the day of the Black Sun, and following it, a magician appears before him. The Black Sun caused the Breakdown Phenomenon which destroyed the town where he lives. Because of this, his normal life was artificially reconstructed by a Grimoire that his childhood friend had left. Just what is the purpose of the magician coming to the town? What will he do with the Grimoire's keepsake?

Seven women, one man, a suspenseful harem story!

During a class reunion, the school became an enclosed dimension without warning. Yelling and screaming brought no response. 26-year old unemployed Haruka Sato has to survive by cooperating with seven of his former classmates. Soon, the extreme conditions began to eat away at their sanity, and Haruka's hidden desires began to take hold.

Struggling streamer Doyeon Choi downloads a mysterious dating sim game, Heart-Racing Ghost Dating Sim, only to find himself trapped in a deadly loop-- where the love interests are real-life ghosts with unresolved deaths. From haunted highways to murder cases, Doyeon must navigate a world where romance, horror, and mystery collide. Every wrong move could cost him his life...again.

One day 's lunch break, suddenly a male high school student Yuzo Ogata being transferred to another world of sword and magic together with four other friends.

According to the Princess of Space-Time Magician, a foreign world who summoned them, they want them to beat the Demon Lord as Heroes to save this world.
Suddenly I was surprised at four friends "Temple", but it was a relaxing expression ... ... where the princess told of a startling fact!
"`―― There should only be four braves though?"
"A man who was mistakenly summoned to a different world" What will be in store as to his fate?

Source: http://konomanga.jp/manga/taitei-cheat

A young man wants to marry the mothers of the hero's party—

As a member of the hero's party Ceres, the main character, set out to defeat the demon king.
But one day, he was suddenly dismissed by the hero, and he had to leave the party.
All alone, Ceres sought to find a domestic slave to take care of him. What he saw at the slave market was Ms Shizuko, the mother of the hero, sold as a slave—??

The unreasonably expelled young man's Isekai mama harem is born!!

Kosuke was killed by Truck-kun, and was given the ability to live in a new world. Additionally, he was provided two lovely assistants who would do anything for him. This is a story of his adventures with them.

The three girls who have a crush on high school boy Izumi Sumie are all main heroine-tier stars!

The school idol, but secretly a gal who just wants to be pampered - Amane Amasaki!

The pristine student council president, but a former fiancée who loves to dote on him behind the scenes - Hakua Shiragiku!

The bratty kouhai, but a surprisingly easy-to-win-over little devil - Haru Kasuga!

However, perhaps because their positions are so rock-solid, they have spent their days unable to take that next step forward. Then here comes the transfer student, Nanao Nanase, a seemingly ordinary but naturally born main heroine. A single sentence from her instantly rewrites the balance of power in this rom-com!

A super-powerful nation, the kingdom of L'Arc. Razel, the son of the king but without the talent of Takeshi,
Compared with Kensei's sister and wise man's sister, they are exiled.
Such a lazel is a natural positive,
I'm trying to live as an adventurer in another country,
The older sisters and younger sisters who love him are chasing after me !?
With strong and a little naughty sisters
Flirt adventurer life, start!

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.

When the planet perishes and the gods fall, the collapse of the magical realm leaves humanity without any protectors. Now, "Anomalies" and "Catastrophes" begin to invade the human realm . As the Dark Age descends, a soul from Blue Star (Earth) is unexpectedly transported into this dying realm.

The middle boss of the AAA-class game produced by the company. The villain who dies 999 times out of 1,000 times. Deculein.
That person, was me now.
“You’re going to die on almost every route.”
Deculein, like all villains, inevitably dies.
[First and foremost survival goal: Be what the game requires you to be]
I’ll have to survive even if it means twisting my fate if I am destined to die.

After a freak accident involving some lightning winds up zapping him dead, 15-year-old Mochizuki Touya wakes up to find himself face-to-face with God. “I am afraid to say that I have made a bit of a blunder…” laments the old coot. But all is not lost! God says that he can reincarnate Touya into a world of fantasy, and as a bonus, he gets to bring his smartphone along with! So begins Touya’s adventure in a new, anachronistic pseudo-medieval world. Friends! Laughs! Tears! Inexplicable Deus ex Machina! He sets off on a journey full of wonder as he absentmindedly travels from place to place, following whatever goal catches his fancy. The curtains lift on an epic tale of swords, sorcery, and smartphone apps!