I'm not sure specifically as there could be many different 'great mage light novels'. But often, there would be the great mage as the central character.
Typically, in these kinds of light novels, the mage's return often disrupts the existing power balance. There might be a young and inexperienced protagonist who has to quickly adapt to the new situation. The returning mage could bring back forgotten knowledge or magic that was lost. For example, they might introduce new spells or ways of combat that the current generation has never seen. There could also be a mystery surrounding their return, like a hidden purpose or a prophecy that led to their comeback.
It could be about a mage who was once great but had to leave for some reason, like being exiled or going on a long quest. His return might stir up a lot of things in the story's world. It might involve magic battles, reuniting with old friends or allies, and facing new challenges that have arisen in his absence. For example, the power balance in the magic world could have shifted, and his return is the key to restoring order or causing chaos, depending on his motives.
Well, aside from the great mage who returns, there could be a sidekick or a mentor figure who was important to him in the past. Maybe there's a young apprentice who looks up to him and becomes involved in his return journey. There could also be an antagonist, perhaps a powerful dark mage or a political figure who sees the returning mage as a threat to their power or plans.
I'm not sure exactly as I haven't read it in detail. But generally, it might be about a great mage who comes back after 4000 years and perhaps faces a world that has changed a great deal during that time.
You can try to look for it on some well - known e - book platforms like Amazon Kindle or Barnes & Noble Nook. Sometimes, official publisher websites also sell or provide information about such light novels.
Well, from the title 'great mage returns after 4000 years light novel', it could be a story centered around a mage. After being away for 4000 years, he returns to a world that has likely changed a great deal. Maybe he has to relearn things, face new enemies or reconnect with old allies. It might also explore themes like the passage of time, power, and the mage's place in this new world.
The great mage is surely one of the main characters. But we may also find characters like the mage's former apprentices or friends who are still alive or their descendants.