Itsuki rejoins the ICP with help from Nina. A mysterious box shows up that asks to be delivered to the head of the Shishido family, saying it has information about Enigma. Itsuki brings the box to Akiha at school, and they realize that there is a human inside. In the meantime, Honoka meets with the Shishido family elders, who turn out to be old friends of hers. The box is nearly destroyed after being mistaken for trash, but Akiha and Itsuki save it and take the box to the Shishido family home, where they discover that the person inside the box is a renegade Nervalist...