Saint Sasha possesses holy powers that are effective against demons, but the "Scarlet Demon’s Stone" is the source of her strength. Using her strongest abilities draws power from the stone, which begins to corrupt her.
Sasha could use her holy vessel to contain the demon within herself, effectively sacrificing her humanity to become a "Living Seal." Key Themes in the Narrative saint sasha and the scarlet demon’s stone
She walked into the demon’s lair alone, carrying neither blade nor prayer book, but a single vial of her own blood and a lullaby their mother used to sing. Saint Sasha possesses holy powers that are effective