"He lives there for a couple hundred years and then he goes back, and when he tells people, they don't believe him because there was no such thing as a jungle world; there are four isekai worlds, but only three of them are known.
He then basically takes the dungeons in the real world by force with his overwhelming skills that he learned over a couple hundred years surviving in the jungle. "
Taken from, Manga where protagonist is isekai'd to a jungle world, returns after 200 years, and conquers the real world
When he first arrives, he got chased and attacked by wolves? And only when he protected the weakest aka youngest wolf cub did he end up becoming the jungle wolf king with the cub being his 'bff'?
Then when he finally able to leave that jungle world after some hundred years via a glow up crack in the ground i think? Upon his arrival on earth, he encountered a person who expected him to have magic or cool weapons but was disappointed when he didn't have any. They brought him to a hospital where he got continuously interviewed...as they don't believe anything in what he says yet expect sensible answers out of him.
He wields some big ass weapon? in the jungle world, runs around like Tarzan? He fights with bare hands, a physical warrior.. I'm not sure whether he managed to bring his weapon back??? He's like the Hulk??
Not sure about how the dungeons look but it could be like its an area blocked off by walls and full with building ruins and big creatures.
And, i believed it was in black and white. And I'm sorry if i may have unknowingly overlap some details with other mangas. But it's a jungle world.
