Buchio grapples with a concern that all yokai like him eventually face: the fact that his lifespan is much longer than that of humans. His new friend Wagen has been dealing with the same concern in his life with his aging partner, Kazuhiko.
My grandma's mother would be... 
my great-grandma, right?
جدّة أمّي هي... جدّتي الكبرى، صحيح؟
Omas Mutter ist dann meine Uroma, oder?
La madre de mi abuela es…
mi bisabuela, ¿no?
La madre de mi abuela es…
mi bisabuela, ¿no?
La mère de mamie,
c’est mon arrière-grand-mère ?
La madre di mia nonna...
Sarebbe la mia bisnonna, giusto?
A mãe da minha vó seria... minha bisavó, né?
Мама моей бабушки…
она же мне прабабушка, да?