Elysia explained a bit about the crux of the matter regarding the Demon King of Extreme Evil's domain to Rhykdohr. The hero expedition team would require combat power equivalent to four 10th Rank powerhouses to subdue such a great evil.
It was only for dealing with the Demon King. As for the other sealed demons, it would be a different matter. There was also a possibility that the Demon King of Extreme Evil might be a reincarnation of the Heavenly Demon.
"I see... so you think this hero generation is bound to fail as well... It has been more than four hundred years since that thing was sealed by a passing Ancient God. If it weren't for the mortal world's restrictions, we would have dealt with that threat long ago." Rhykdohr nodded in understanding.
