Moon Breathing is a style practiced ... Originally, there was one Breathing Style for demon slaying, known as Sun Breathing. It was developed by Yoriichi Tsugikuni, but proved too difficult ...

Yoriichi invented the powerful sun-breathing style, which he tried to teach everyone, but no one could match his potential. This is how other breathing styles, like the Wind Breathing and Moon ...

Sun Breathing, also known as Hinokami Kagura, is one of the Breathing Styles created by Yoriichi Tsugikuni. Using this technique, Yoriichi almost defeats Muzan Kibutsuji in the Sengoku era.