Kotori Itsuka is a prominent character in the anime series 'Date A Live'. She is the adoptive younger sister of the protagonist, Shido Itsuka. Despite her young appearance, Kotori is the commander of the airship Fraxinus and a Spirit known as Efreet. With her dual personality, she is sweet and caring in her normal state, but turns serious and commanding while in her commander persona. Her role is crucial as she guides Shido in sealing the powers of other Spirits to prevent disasters.