Kurumi Tokisaki is an fantastic character of the anime series Date a Live.
She is the deadliest spirit of the series with the codename "Nightmare".
As weapon, Kurumi uses two magic flintlock firearms: a pistol and a carbine,
which behave more like semi-automatic weapons, being able to be fired a seemingly
endless number of times. Her angel Zafkiel, is a powerful living but emotionless
weapon that is one of the seven archangels and a villain in the Date A Live series.
Kurumi is able to control the time, using Zafkiel and her lifespan
(which is shown in her left eye) to load her flintlocks and shot the target.
She can gain some lifespan by absorbing the lifespan of an another person.