Due to a Spirit killing her parents 5 years ago Origami has harbored an intense hatred and hostility towards all spirits, whenever she sees a spirit she loses all of her common sense and tries to kill it any way she possibly can. This hatred is shown to be strong enough that she was willing to kill Kotori despite the fact she knew she was Shido's sister, and only stopped because he pleaded for her to not kill Kotori, and told about Phantom's existence.
As the series progressed, Origami has shown a growing desire to obtain power. This eventually caused her to join DEM, and later, after she was defeated, to accept a Sephira Crystal that turned her into a Spirit.