Minamoto is given a very important mission together with Aoi to take something in a briefcase to the prime minister of Japan, though he is currently about to attend a conference in another country. Aoi gets in a fight with Kaoru and Shiho before they leave since she thinks they do most of the work on their missions. During the mission, Minamoto and Aoi get captured and thrown in a holding cell due to the actions of a government spy intending to interfere with their mission. Minamoto extracts a portable Esper Counter Counter-Measure to allow Aoi to teleport them out and continue with the mission. Minamoto stays behind to apprehend the spy who has escaped in a plane and caught up with Aoi. The spy fires homing missiles at Aoi who turns them against him, destroying his plane and leading to him being apprehended. Upon delivery of the package, Aoi finds out that inside the briefcase is a pillow since the prime minister cannot get to sleep unless using this pillow, which angers Aoi. Aoi later reconciles with Kaoru and Shiho as the three stick together as a team.