Total Concentration Breathing says ZENSHUCHU NO KOKYU in Japanese.
ZEN = all
SHUCHU = concentration
NO = of
KOKYU = breathing
Tanjiro says “Zenshuchu! (concentration!)” just before he uses his breathing technique.
The word Zenshuchu became craze in Japan and everyone got to use it when focusing on doing something. And this is a very effective word for kids to make them calm down.
Total Concentration: Constant
Total Concentration: Constant is a breathing technique that maintains concentration status continuously, even while sleeping.
This technique says JOCHU in Japanese. JO means always, all the time and and CHU means middle. There’s no word such as Jochu in Japnese and it’s a coined one. We can easily guess that this CHU doesn’t mean middle, but comes from SHUCHU’s CHU and it means “concentrate all the time”.