"Understanding" is "Stronger" than a Sword! There is no magic without any weapons!
But! This is the story of a man who wishes to live safely!
"So, I've come to a different world."
That man stood alone in a mountain full of plants and creatures that he never knew nor saw before. He goes down the mountain by avoiding encounters with a big slime (and bandits), and is caught as a suspicious person in the castle he reaches. In interrogation the female knight Ilius met at the imprisoned place, when talking about the bandits seen in the mountain, Irias, who was stuck in the search for said bandits, hurriedly strikes the bandits . My wish to be a brave man, or to build a harem?
"I just want to live in a safe place" - a story that such a man survives the different world with "Understanding" as a weapon!

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!

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

"THE NEW GATE", an online game that trapped its players and turned into a death game, was now releasing the thousands of players that had been dragged into it, thanks to the efforts of Shin, one of the most powerful players. But after having defeated the last boss and freed everyone, he was swallowed up by a strange light and found himself inside the game world 500 years in the future and unable to leave.

I’d been stanning the hero for 3 years when I was suddenly caught red-handed by his tyrannical doting father, Duke Hades Louvremont.

“Ceaseless pursuit, expensive gifts, and now you’ve come alone all this way up north with no regard for your life…”
“I’m sorry. I have no excuse.”
“Alright, I’ve lost. Your devotion is undeniable.”
“...You think so too? Even I admit that this is the pinnacle of devotion.”
“Many women have pursued me, but none as persistently as you. I stand amazed. Let’s hold it, then. Our wedding. As soon as possible."
“Ha... Yes, I’ll accept my fate.”

Silence.

“Wait, pardon?! What?”

What did he just say?
Surely I must've misheard?
But the duke, smirking at my shocked face, gave the finishing blow.
“I said, I’ll marry you.”

Wow.
The hero’s dad has an inflated ego.

Shimazu Toyohisa, a real-life samurai who fought in the pivotal Battle of Sekigahara. In his dying moments, Shimazu is transported to a world of magic with other famous warriors throughout history. These warriors are forced to fight each other in an endless battle.

Note: Nominated for the 4th and 5th Manga Taishou Awards.

Towa was reincarnated in the same other world for the second time. There, although time had passed since his first reincarnation, his friends at the time were spending their days feeling too heavy for Towa...

“Isn't it okay to stay by your side forever?” "If you disappear again, I'll die and chase you this time!?"

The beautiful elf they meet again and the sexy succubus heroine press for physical contact as if to make up for the time they lost, and Towa, now a young boy, is violently approached...?

“Towa, could you please take me too?”

A harem fantasy begins with the heroines who have feelings for each other after reincarnating for the second time!

When he realized it, the protagonist was in another world and had become a sword that was stabbed on an altar in a great plain, crowded with devil beast. The world he was in had a game like system; HP, MP, Strength, Vitality, Agility, Intelligence, Dexterity, Titles and Equipment. Following his instinct as a living sword, he traveled to find the one who could be his wielder, until he met with a cat girl that was about to be attacked by a bear type devil beast.

Orginal Webcomic

Kashumir grew up working as a mercenary to buy medicine for her precious younger half-sister, Aria.On her way home, after completing a mission as usual, she tripped and hit her head, causing her to remember her past life; thus she realized she had been reborn in the world of the novel *The Night of the Fairy*. Her sister was the main character of this reverse-harem romance while she was one of the villains causing Aria to suffer hardships.Since there is no way Kashumir would let her precious sister suffer, she vowed to protect Aria until her adoption into the count's family, just like in the novel.But things turned out differently, and even the male lead candidates, who should've been fish in Aria's pond, all ended up becoming obsessed with Kashumir instead, when all she wanted was to protect her lovely sister.

From MangaHelpers :
High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, powerful others in this world aren't as thrilled to have him there, and they kick him to the edge of the world just as Tsukuyomi declares that he must leave Makoto to find his own way. Now it's up to Makoto to find his own way.

Gone are the days of swordsmanship and chivalry. Now is the age of gunpowder and war. Our story has two players. The first is Orcsen, a unified nation with many demonic races, led by the oft-reviled orcs. And the second is Elfind, the kingdom ruled by the beautiful yet vainglorious elves. Dineru, chieftain of the dark elves, has been forced to flee her homeland from enemies she had once trusted as friends. In the midst of their forced diaspora, she has a fated encounter with the leader of Orcsen, the orc king Gustav...

When an entire bus of people are summoned to another world, Souma Nagi doesn't go along with the idea of being a Hero like the rest. Thus he leaves the palace and starts his life in another world with his ability to restructure skills. Based off the Light Novel by the same name.

Average high school student Mikagami​ Kouji is a hardcore gamer. One day he gets isekai'd and he only gets the skill "copy" which is apparently useless but we all know it's secretly OP or something. He's enslaved to be a gladiator by his summoner, the big booba, head priestess Zayd. He has to fight in the Colosseum and if he loses he gets raped.

Who says revenge is vain? It's so fun!

In a world where magic is extremely advanced and boasts a civilization that is no different from science fiction, he has reincarnated into the noble 'Rondel' family.

However, born as the child of a commoner concubine, his life is threatened by the first wife and half-brother. He acquired the role of 'Manuel Lucas', the great mage who changed the world. And a refreshing revenge story begins!

'From now on, I'm going to live the life I wanted'

One day, Sylva realized that he reincarnated into a mob soldier from the game that he was hooked on in his previous life. Even though he utilizes his game knowledge to do his utmost best to survive in this dangerous world, he opts to hide his true strength in order not to throw the scenario into disarray. However, an unexpected turn of events led him to easily defeat a powerful demon that even the hero is hard-pressed to defeat. And to make matters worse, he did that in front of his favorite heroine in the game... Upon this incident, word started getting out about his true strength...!

Atobe Arihito is an intense workaholic thanks to his slave-driving boss, the beautiful Igarashi Kyouka. En route to an office vacation though, their bus gets into an accident, killing Arihito instantly.

His soul is transported to the fantasy world of “Labyrinth Country,” where he’s reincarnated as a “dungeon seeker”! Trying to join a guild and pick a job, he’s surprised to run into Kyouka, who also died and has chosen the job of “Valkyrie”! However, he rejects joining her party and decides to become the rare support role of “Rearguard”! But will he be able to find a party in time?

Presented with the strange Gift of Village Building, Luke, the son of a lord, is cast out of the domain in shame. He arrives in a barren land with plans to develop it as well as he can, and to live a simple, quiet life...when suddenly his mysterious Gift activates! Enjoy Luke’s amazing, slow life, and watch as his village grows, his Gift levels up, and his village-building capabilities transform in this new comedic series!

Shu, who died of old age, reincarnated as a baby in a different world where he was picked up by a poor orphanage. He quickly grows up under the watchful eye of the gentle director and staff. With skills received from God, he starts to exert talent…
He now lives at his own pace, adventuring with cute monsters and good friends ♪

In a forgotten corner of a massive castle, a starving child teeters on the edge of and death…until she suddenly awakens with the memories of Chihiro Sagami, an office worker from modern Japan?! Determined to survive at all costs, she stumbles upon a kindhearted chef and strikes a deal: food in exchange for work. Though small in stature, her nimble hands and capable skills quickly earn her the fond nickname “Little Helper” among the castle staff. But behind her infectious eagerness and penchant for delicious food, her mysterious golden eyes hold a great secret that could determine the fate of the world!

An 18-year-old girl who lost her family in an accident, Yamano Mitsuwa falls off a cliff one day and transferred to a different world with a civilization level of medieval Europe. Mitsuwa who discovered it was possible to go and return to Earth after a deadly fight with wolves decided to live in both worlds.

「For security in old age, I will aim for 80,000 gold coins!」

I will try not to let strange things circulate to not distort the progress of the world, but I won’t hold back for the sake of my easy life and safety!
While wearing three handguns along with words and deeds that appear decent, in her head Yamano Mitsuwa is a sly girl. Making an effort to make money even with a small body that looks like a child to Westerners!

Oh, my secrets are too dangerous, is that so? It’s all right, it’s fine! I’ll teleport away when push comes to shove!