※NOTE：This article includes spoilers.
This time, We would like to summarize the story “Supreme Area” depicted in episode 63 of the manga Demon Slayer.
Contents
The beginning is …
“Supreme Area” is a word that Akaza saw Kyojuro during the battle between Akaza of Upper rank three and Flame Hashira Kyojuro Rengoku, which appeared immediately after defeating Enmu of Lower rank one.
Akaza decided that Kyojuro was not yet in the “Supreme Realm” and said:
“I’ll tell you why you can’t step into the supreme realm.”
“Because it’s human”
“Become a demon, Kyojurou will be strong enough to keep training for 100 or 200 years.”
The “Supreme Area” is an area that can only be entered by continuing to train so much.
Tanjiro masterd “Transparent World”
After that, the story goes on and talks about “Supreme Area” in episode 153.
At the end of the battle between Akaza, Water Hashira Giyu Tomioka and Tanjiro at Mugenjyou, Tanjiro masterd “Transparent World” to overcome “Destructive Kill Compass Needle” which reacts to Akaza’s fighting spirit.
“Transparent World” is as follows, Tanjiro’s father said in episode 151.
“After learning and absorbing a lot of things, remove what you don’t need.”
“Then the inside of my head becomes transparent.”
“When the inside of my head becomes transparent,’Transparent World’ begins to appear.”
Tanjiro remembered his father’s words and put them in “Transparent World” to close the fight so that Akaza’s Compass Needle wouldn’t detect them. When entering this “Transparent World”, it is described from episode 152 that “the speed of motion prediction and attack avoidance will increase dramatically”.
What is “Supreme Area”?
Akaza, who confronts Tanjiro who mastered this “Transparent World,” thought to Tanjiro that “there was no murder or fighting spirit” and “probably what his eyes caught.”
This “Transparent World” is the “Supreme Area” that Akaza was looking for, and Akaza’s feelings were drawn, saying, “It is nothing but a state of selflessness.” It was said that “Supreme Area (the state of selflessness)” = “Transparent World”.
Summary：
Akaza’s “Supreme Area” was described as “the state of selflessness” in Akaza’s words and “Transparent World” in the words of those who use breathing.