Shutaura Sequenzia; she has the will to protect her alter ego Meigo Arisa at all costs. They end up with each other reuntied in the end.
Shutaura Sequenzia (シャットアウラ＝セクウェンツィア Shattoaura Sekuwentsia) is a character original to the Toaru Majutsu no Index Movie. Under the orders of Academy City's Board of Directors, she responds to the need to protect a Level 0 named Meigo Arisa from Stiyl Magnus and the rest of the magic side's attacks.
Shutaura is a girl with a rather slim physique, has long straight black hair and black eyes. She is often seen wearing the uniform of the Black কাক Unit, which is a tight-fitting bodysuit with gray, white and red details.