
If you're looking for manga similar to Class ga Isekai Shoukan Sareta Naka Ore dake Nokotta n desu ga, you might like these titles.
Daiki Morishita, a normal high school boy was transported to a fantasy realm, where he ultimately defeats the Demon King. Having fulfilled his mission, he returns home, terribly missing his mother's home cooked meals. Upon his return home however, he discovers that he has brought something special back from the fantasy world.
In a fraction of a second, an university student, Kashiwagi Yuuya was summoned to another world and came back. Time didn’t pass in Japan, but Yuuya has completed the quest as a hero in another world and successfully returned. But to his surprise, he still retains his powers as a hero. Thus started the unordinary life of a hero in present day.
On the first day of high school, Yuuki Kousuke was killed while trying to help someone. However, that was not the end of his story. The old man he helped happened to be a god. As thanks, he lets Kousuke reincarnate into another world. He was overjoyed to live the life of those overpowered protagonists seen in his favorite isekai stories, however, when he came to, he found himself at the very same spot he died. This is the story of a protagonist living a peaceful life in the modern era with the cheat ability given to him by a god... not. The cat he ended up saving turned out to be a god too.
Daiki Morishita, a normal high school boy was transported to a fantasy realm, where he ultimately defeats the Demon King. Having fulfilled his mission, he returns home, terribly missing his mother's home cooked meals. Upon his return home however, he discovers that he has brought something special back from the fantasy world.
Suzuki is a programmer in the midst of a death march-crunch time, when coders live on caffeine and pull twenty-hour days. He just needs a little nap...but then he has a dream. A dream where he's in another world, with RPG powers right out of his game. A dream where he calls down a great disaster. A dream that, suspiciously, just won't end...
Negi Springfield is ten years old... and a powerful wizard! This boy wizard is the greatest prodigy ever to graduate from his magic school in England. After graduation, however, Negi’s given an unusual assignment: teach English at an all-girl school in Japan. Now Negi has to find a way to deal with his thirty-one totally gorgeous–and completely overaffectionate–students... without using magic!
Sakai Yuuji thought he was a normal high school student, until one fateful day when time stopped. Watching in horror, he witnesses a monster devouring the "frozen" people around him; but luckily for Yuuji, he is saved by a sword-wielding red-headed girl that calls herself a "Flame Haze". The girl informs him that he has been dead for some time now and that his current self is merely a replacement for the human that he used be while alive. He is, she says, merely a torch whose life will come to an end when the blue flame in his chest ceases to burn. After this rude awakening, Yuuji realizes that he is able to see the flames of life in other "torches"; and after discovering that a friend of his is also a torch -- and her life is burning out faster than his – he gains the courage to live out the rest of his life with meaning. Will Yuuji be able to find his place in the world before he ceases to exist?
In a fraction of a second, an university student, Kashiwagi Yuuya was summoned to another world and came back. Time didn’t pass in Japan, but Yuuya has completed the quest as a hero in another world and successfully returned. But to his surprise, he still retains his powers as a hero. Thus started the unordinary life of a hero in present day.