Sekai Oni

Overview

A little girl called Shinonome Azma is abused by her family, and that made her quite unstable, to the point were she has been driven to the limit, and now she has the rare sickness of Alice through the looking glass, that makes her see things that shouldn't be there reflected on mirrors, water, glass, etc. Everything starts when the things she sees start affecting directly the world everyone else sees, and the barrier between reality and illusion breaks apart, like a mirror falling to the ground.

Source: AniList