Since the September 30 attack on Academy City by The Right Seat of God's Vento of the Front, tensions grows between the Catholic Church and Academy City, with the latter's tightening their security. Tōma has an unlucky day where he gets bitten by a hungry Index, hit by a ball on the head by Seiri, accidentally sees his teacher Suama Oyafune removing her skirt and gets attacked by Mikoto after the latter discovers a selfie of him and her mother Misuzu in his phone. As he heads home, Tōma is forced to follow an old woman named Monaka Oyafune, Suama's mother, to an empty park. Monaka reveals to Tōma that she is one of Academy City's Board of Directors and fears the upcoming war and wants him to investigate whether the recent world wide protest against Academy City are really the work of the Catholic Church. Tsuchimikado appears and shoots Monaka, which the latter explains she ordered the former to shoot her to protect her family and satisfy the rest of the Pro-War Board of Directors for talking with Tōma behind their backs. Agreeing to work with her, Tōma follows Tsuchimikado as they head to Avignon, France via a supersonic jet.