I'm not sure specifically as I haven't read this novel directly. But generally, in the isekai genre, it might be about a second summoning to another world. Maybe the protagonist has been summoned once before and now experiences a second summoning with new challenges, adventures, and character development.
I'm not entirely sure as I haven't read it specifically. But generally, 'isekai' novels often involve a character being transported to another world. Maybe this one is about a second summoning to an isekai world.
Some popular isekai novels are 'That Time I Got Reincarnated as a Slime'. It has a unique take on the isekai genre with the protagonist being reincarnated as a slime and building his own nation in the new world. Another one is 'Overlord' where a powerful player gets trapped in a game world. These might share some elements like the concept of being in a different world and having to adapt, although not exactly about a second summoning.
You could try looking for it in some specialized Japanese light novel stores, either physical or online. Some well - known online platforms for Japanese light novels might have it available.
I'm not sure specifically as I haven't read this novel directly. But generally, a title like this might be about a summoned sage who travels to another world. It could involve the sage's adventures, the challenges they face in the isekai world, and perhaps how they use their wisdom or powers.
Well, without having read the actual 'zettai ni yatte wa ikenai isekai shoukan novel', it's difficult to give a detailed account. However, given the title, it could be about a character who is summoned to an isekai world and discovers there are certain actions that are strictly prohibited. Maybe it involves a protagonist who has to navigate this new world while avoiding these forbidden deeds to achieve a certain goal, like saving the isekai or getting back home.
The title indicates that the summoned sage is a key character. There may also be other characters like those who summoned him, or characters he meets in the isekai world such as local inhabitants, other adventurers, or even potential foes.
The title 'Shoukan sareta kenja wa isekai wo iku novel' gives the impression that it's a story centered around a summoned sage. In many isekai novels, the summoned character often has to deal with new and strange environments, different cultures, and various challenges. This sage might be no different. He could be using his wisdom (since he is a sage) to survive and thrive in the isekai world, perhaps making allies, facing off against enemies, and uncovering the secrets of this new realm.
As I'm not familiar with this specific 'zettai ni yatte wa ikenai isekai shoukan novel', there's no way for me to determine the main characters. It could be a typical isekai setup where there's a young male or female protagonist who gets summoned to the other world and has to face various challenges, but without reading it, this is just speculation.
Some similar isekai novels could be 'That Time I Got Reincarnated as a Slime'. It also involves a character going to another world and has elements of adventure and building a new life in the isekai. Another one could be 'Overlord', where the main character is transferred to an isekai world with his in - game powers. And 'Sword Art Online' has some isekai - like elements as well, especially in the Alicization arc where the characters are in a virtual world that is very much like an isekai.