Follow the Hundred Knight in its journey through a witch-ravaged world. Young girls are contracting a strange illness and awakening as witches, causing mayhem across the region of Kevala. Along the Hundred Knight's side are two sisters: Amalie, an agent of an organization who opposes witches; and Chelka, the witch who awakened in Amalie's younger sister, Milm. Uncover the mysteries of Kevala as you protect them both from harm.