Webgyomei is more than just a brawny and powerful hashira in demon slayer. His tragic backstory is key to why he has such incredible emotional depth as a person. Webthis episode dives deep into the stony heart of gyomei himejima, our beloved stone hashira, and boy, does it get intense. Webstone breathing (岩 (いわ) の呼 (こ) 吸 (きゅう) , iwa no kokyū?) is one of the five main breathing styles derived from sun breathing. Stone breathing is a breathing style that. Webbased on the only user in the series, gyomei himejima, it can be assumed that stone breathing can only be used with a flail and axe. The stone breathing involves sturdy.