Thread:EvilDragonLord/@comment-25043344-20180529173124/@comment-26240689-20180529225039

Ban spent the first hundred years getting burnt and all, still it took him 200 years getting almost used to all of it (even though he still gets destroyed by the environment). In addition, he needed another 200 years being able to even sleep.

So 4 centuries in total at least, not counting the times he wanders around in fox's form and fights Meliodas.