The vast game of Social-Network Tag continues to unfold in the real world-and in the middle of it, Yuma visits the Kashiwagi residence to unravel the mysteries surrounding his past. As his memories begin flooding back, he is greeted by a familiar face-his twin brother, Ataru! But this heartfelt reunion is anything but as Ataru kicks off a violent battle with Yuma. Who will prevail in this deadly fight between long-lost siblings, and will Yuma be able to discover the secrets of the Kashiwagi clan and his own identity?
