Sumireko looks after Oto while Adashino is away. They go to Oto's school where Sumireko revels in the joys of youth. She and Oto run into Uname and spend the evening with her. But their peace is short-lived as the shadow of a new Curiosity draws near.
If anyone's going back, it'll be 
the two of us together, Ren-nii!
!لن أعود إلا برفقتك يا رين-ني
Wenn wir heimfahren,
dann beide zusammen, Bruderherz!
Si volvemos, lo haremos juntos.
Si volvemos, lo haremos juntos.
Noi due torneremo a casa insieme, Ren!
Se for para voltar, seremos
nós dois juntos. Ren-nii!
Если уж возвращаться,
то только вместе с тобой!
ถ้าใครจะกลับ,
คงเป็นเราทั้งคู่, เรน-นี่!