Arisa Meigo

鳴護 アリサ
Meigo Arisa is a level 0 esper. She is a singer who is aiming for a debut and later while performing in roadside concerts wins an audition for the image song of the opening campaign for Endymion. She has a relation to a certain mystery and according to Stiyl Magnus could likely cause a war between the magic side and the science side. Source: Toaru Majutsu no Index Wikia