A week ago, Hinata received her diary, with the ability to control dogs on her command, from her dog breeder father Karyuudo, who wanted her to eliminate Aru. In the present, Aru challenges Hinata to guess which hand he is hiding a coin in, with his diary as the forfeit. Despite using Yuki's diary, Hinata loses and has to release Yuki. However, Yuno realizes that Aru is not a Future Diary Holder, relying on bluff and observation instead. Aru proposes one more round of his game, with Yuki's diary on the line. He manages to guess correctly this time, seeing that Yuki's diary predicts what only Yuki perceives. Mao attempts to destroy Yuki's diary, but Yuno injures her. Yuki, Yuno, Aru and Kosaka leave the park, while Hinata uses her diary to send the dog pack after them. Before Yuki decides to reason with Hinata, Yuno reaches her first and threatens to kill her. To pacify Yuno, Yuki is forced to declare her as his girlfriend. Karyuudo communicates with everyone via radio, explaining that he mistook Aru as a Future Diary Holder, and after he warns Yuki about Keigo, who kills Karyuudo.