Undergoing any Shingon practice on one's own without empowerment and guidance is extremely frowned upon not only because it is considered a serious offence but also because it can be dangerous to the practitioner if not done properly, as is true in Buddhism.
Undergoing any Shingon practice on one's own without empowerment and guidance is impossible. It is considered a serious offence but also because it can be dangerous to the practitioner if not done properly, as is true in Buddhism.