For me, 'That Time I Got Reincarnated as a Slime' stands out. The world-building and plot development are really engaging. Also, the characters have a lot of depth.
Well, it's a bit hard to pinpoint exactly which was the very first one. But some early examples could include 'El-Hazard: The Magnificent World', which had elements of the isekai genre.
Isekai Quartet indeed has a manga. It offers a different perspective and sometimes delves deeper into the story compared to the anime. The manga can be a great companion to the animated version for fans wanting more of the Isekai Quartet world.
I'd recommend checking out online manga libraries such as Comixology or Crunchyroll Manga. They often have a good selection of isekai titles. Also, some local libraries might have physical or digital copies you can access.
Isekai manga is a genre where the main character gets transported to another world. It's different from others because of the focus on this world-jumping aspect and the adventures that follow.
Manga porn is basically adult-oriented manga that contains explicit sexual content. It's very different from regular manga, which can cover a wide range of genres and themes without that kind of explicit stuff.
For must-read isekai manga, 'Sword Art Online' is a great choice. It combines action, adventure, and a touch of romance. The virtual world it creates is both exciting and immersive.