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.
Nise-murasaki is made from the sappanwood 
dye just like the suou color.
يُصنع نيسي-موراساكي من صِبغة خشب 
.البقّم الهنديّ مثل لون سوو
Nise-Murasaki wird genau
wie Suou aus Sappanholz gewonnen.
El nise-murasaki
El nise-murasaki
On fabrique le faux violet
avec des pigments de sappan,
Il nise-murasaki è prodotto dal verzino
esattamente come il colore suou.
Nise-murasaki é feito de
Pau-brasil-da-Índia, assim como a cor suou.
Для цвета нисэмурасаки,
как и для цвета су,