-To get truest ending, you have to beat every boss in the game in a row, with harder arenas, without dying ONCE, with, like, 5 or something full heals. oh, and this includes beating the other 4 pantheons before P5.
-About 0.37% of players have done this.
-People that have actually PLAYED the game consider it difficult, including me. don't call a game easy if you've never played it before.