Sea of People

Black Realm Gates, also known as Calamity Gates.

Among the four types of Realm Gates, they were the ones that were the hardest to conquer and where only the strongest could survive if entered.

...And where the weak had no other choice but to succumb to their inevitable fate, dying without any chance to regret any of their past made decisions.

Raven heard various stories from his family about Calamity Gates, four to be exact as that was the total amount of Black Realm Gates humans have conquered so far, and he understood clearly just how dangerous they truly were.

Within them, during the Realm Gates not only were Rankers' Vitality halved but if they died it meant death in the real life also.

Not even Avatar Totems were able to help those of the unfortunate.

There were no second chances, that's just how harsh the rules of Calamity Gates were.