S01E19 — Clear Data

The mayor of the city, John Balks, passes a motion to have Kamado's orphanage shut down. He then attends Deus' meeting, where Yuki and Yuno, having deduced his identity, expose him as the Eleventh diary holder. Uryu relays these news to Nishijima, who reveals he's been reassigned as Balks' bodyguard. Furthermore, he's discovered that Yuno was adopted. Yuno theorises that Balks wants to seize Kamado's Future Diary server, so she has Yuki form an alliance with her. Yuki, Yuno, Kamado and her apprentices ambush Balks' car on a country road, but he uses a jammer to sever connections to Kamado's server. Yuki and Yuno, who anticipated this, betray Kamado and slaughter her defenseless apprentices. Kamado flees in Balks' car, while Yuki and Yuno give chase. As Yuki and Yuno corner Balks and Kamado, Uryu appears with Aru. Aru reveals he's retrieved Yuno's umbilical cord from her orphanage and that its DNA matches the third corpse's, meaning that the real Yuno Gasai is dead and the one Yuki has known all along is actually an imposter.