If you're looking for manga similar to Bijo to Kenja to Majin no Ken, you might like these titles.
Ken'ichi, a single man in his 40s, is suddenly transferred to another world. As he navigates his way through the dangerous forests of that world, he realizes that he can use a huge online shopping site. Ken'ichi aims to use his cheat ability to live a slow life in another world!
Elf? Dwarf? No! Humans are the strongest! I was summoned to a different world where humans are the strongest living beings. In my previous world I was just a normal everyday salaryman, but in this new world, I seem to have become a rare existence. I, who have obtained the strongest power through my race, have decided to enjoy this seemingly stress-free life to the fullest.
Ready for an adventure that's out of this world? We've gacha covered. Norl's a cutting-edge cutie with a cutting edge who's a cut above the rest. Heihachi's just your average mobile game addict with a whale-sized hole in his wallet. But one day, he pulls an item that pulls him into another world, spinning his life around with a spin of the gacha. Attacked by monsters, and left without options, Heihachi does what he knows best—roll gacha! To his surprise, he watches his unit materialize before his eyes. Heihachi's used to seeing cute girls pop up on his phone, but he's never seen one pop out of his phone! Join him on his quest to collect OP UR QTs! (That's Overpowered Ultra Rare Cuties.)
The Useless Goddess Laura whose only strong point is having huge breasts, and the boy Kehma who was summoned to another world. Gaining a cheat skill that absorbs the abilities of what he eats, he enjoys the other world life eating delicious monsters and playing with the easy to handle Goddess.
Chrono Crawford, a noble of the Cepheus Empire, has a secret. It was that he came from a different world… modern Japan. Having knowledge about modern weapons and his sense of values, he was an existence almost like a cheat, aiming to be the “Harem King”. Abandoned by his superiors, left in command of the Empire’s rejects consisting of demi-humans such as minotaurs, dwarfs, and elves, and thrust into a position as head of a poor fiefdom, Chrono will do everything he can to rebuild and strengthen his forces and revitalize the land, aided in part by his knowledge of the other world.
Many people suddenly find themselves in a white, empty space, where a God-like figure tells them that they are to be reincarnated and sent to an isekai known as Tesla. They are given a limited number of points to spend in various attributes, such as their race and abilities, which will determine their reincarnation into Tesla. Follows a young boy sent there along with his clanmates from an MMORPG, and they plan to stick together and specialize into different skills, just like they did in-game. Although his clanmates and everyone else sent there are strangely accepting of the situation, he finds it too suspicious and decides to go his own separate way, balancing his points out to be an all-rounder instead of a healer. He leisurely goes about life in Tesla as an adventurer, but it slowly starts to seem like there was a reason behind them being sent there...
Kousuke suddenly wakes up alone in a vast forest that clearly isn’t anywhere on Earth. Now he has to find some way to eat, drink, and survive! Luckily, Kousuke also has the power to craft using a special video game menu that allows him to harvest resources and build whatever he can imagine. However, every time he goes to sleep, he’s attacked by one of the many non-human races of this world, all of whom despise humankind. Enter Sylphy, the beautiful dark elf who lays claim to Kousuke and vows to protect him–after all, she’s taken him as her property!
Satou Tarou, a 30-year-old construction worker, just died. Reborn into a fantasy world, he’s granted such a high level of healing magic that it feels like a cheat code–and the healing potions he produces fetch a high price. Now wealthy, powerful, and with the worries of his old world long gone, he’s ready to live it up in this new life…starting at the nearest brothel!
One day, a forever D-rank middle-aged adventurer, Lucas, pulled out the legendary Holy Sword in a drunken stupor and became the strongest! Ever since that day, Lucas’ fate was greatly changed forever. Seeking love and to sate his desires, the reborn middle-aged adventurer's real adventure starts now!
In a world where witches are shunned and have been forced onto the brink of annihilation, a samurai with no memories is transported to the hideout of some of these witches. Having the name: "Dragon King" and a keen strategic mind, its up to him to help defend the witches from those that would seek them harm.