Webevery breathing style utilizes a practice called total concentration breathing, a technique allowing swordsmen to increase their blood flow, oxygen intake,. Webthe brutal hashira training in demon slayer is divided into six stages, and we’ve broken down each grueling part off the process. Weblearn the biggest secrets of the 9 hashiras in demon slayer, or kimetsu no yaiba, they are: Giyū tomioka, the water hashira, kyōjurō rengoku, the flame hashi. Webwhile the hashira all have extremely strong techniques, some of their abilities are particularly overpowered due to the nature of their abilities and the effects. Webkimetsu no yaiba hints at a key hidden power for tanjiro. Introduced in the show's third episode, total concentration breathing is a technique that allows warriors to increase. Webfrom their unique breathing techniques to their tragic pasts, each hashira has their own fascinating backstory and secrets that add depth to their characters. Webeach hashira showcases impressive techniques with their unique breathing style, such as resounding slashes or stone soin.