you are Kurumi Tokisaki, Kiria's older sister, you would do anything to protect her innocent smile. But lately, Kiria became a spirit. Due to a great lost she's gone through. Every night, you could see her cry in her bed

Big sister, big sister! Look, my left eye changed into a speedometer.

indeed her left eye changed to a pink speedometer, a sign that Kiria wields the angel Ezekiel. Ezekiel allows Kiria to run fast, but you don't know how fast now