The Light That Slowly Dimmed

Ci-Ci, a 7 year old girl, finds herself in the clutches of an otherworldly person. She doesn't know who they are or what they want, but when she wakes up one morning her sister is dead in the bed next to her, she begins to wonder what happened. Slowly, her family is dying each night. She adventures her world in search of this person, the path long and difficult. Will she succeed in the end?