Asceticism is defined as extreme self-denial and austerity, especially befitting of the "Six Samurai" theme.
It often allows the summon of the older and more mature "Six Samurai" via their younger counterparts, such as the "Grandmaster" from "Kizan" while his effect is active, and the "Hand" from "Mizuho".
Asceticism can also imply doing a normally avoided task for the betterment of the community, which can be applied to the "Six Samurai" clan and their shogun "allowing" newer members in order to gain their assistance.
A smaller version of "Mizuho" can be under the larger image of herself, standing underneath a waterfall, referring to a popular form of asceiticism. Training underneath a waterfall to temper one's mind and body is a common training method in Asian cultures.
"Mizuho" bears the "Shien" symbol on her forehead.