One morning, Seiji runs into Kounosuke while out on a walk. The two young men discuss recent affairs on Ryogoku bridge, but Kounosuke suddenly loses his balance and falls in the river, accidentally pulling Seiji with him and losing his precious seal box, Kogare-kou, that has been passed down in his family for generations. Kounosuke does his best to look for it, but to no avail. Meanwhile, another young man appears to have found Kogare-kou and demands a considerable sum for its return. With Kounosuke facing being disowned by his family if he cannot get the object back, Seiji and Oko do their best to help him raise the money with the help of the tsukumogami.
Perhaps Seiji hadn't considered the 
possibility that it was Kogare-kou that fell.
ربّما يكون سيجي قد أغفل عن مسألة
.أنّه قد يكون كوغاري-كو من وقع
Vielleicht hatte Seiji diesen Fall
gar nicht in Betracht gezogen.
Puede que Seiji aún no haya considerado
que Kogarekou pudo haber caído al río.
Tal vez Seiji no haya pensado
que Kogarekou se ha podido perder.
Seiji sait-il que Kogarekô
est peut-être tombé à l’eau ?
Forse Seiji non ha considerato la possibilità 
che sia stato proprio Kogare-Kou a cadere...
Talvez o Seiji não considerou a possibilidade
de que foi o Kogare-kou que caiu.
Сэйдзи ещё не рассматривал возможность,
 что упасть в реку мог Когарэко.