Solitude of the Mournful Flow: A Stray Sheep.Rintaro briefly has a vision of a world line where he is caught up in the middle of a war, which he eventually comes to realize was his Reading Steiner taking effect. Meanwhile, Suzuha explains to Daru that she is looking for Kagari Shiina, Mayuri's future adopted daughter who time-traveled with her from the year 2036 but became separated from her in 1998. As Rintaro decides to help with the search, he gets a call from Luka Urashibara about a pressing matter before finding Daru has called Moeka Kiryu over.