Rui Ayase 綾瀬留衣

Having been her long-standing childhood friend, Rui has artistic affinities and can easily detect when Ran is in distress about something when she starts up with the quick but brief laughter fits. Upon learning of her psychic powers, Rui indicates that he is fond of Ran for the person she is. He has the ability to neutralize and amplify psychic powers. (from Wikipedia)