A special episode appeared out of necessity and confusion among some watchers of Deca-Dence. This is a 20 minutes recap of the first 5 episodes that provides further explanations about the in-universe laws and logic of the anime. There are extra narrations that are set to clear all doubts and questions (until the end of episode 5 of course). I get that the anime plot and world lore is a bit complicated though some had no problem understanding it. If you are still confused, then this will surely help. Fans of Natsume will love to see her again even in this condensed version. To watch after episode 5or it’s meaningless.