Oko has been on a neverending search for the incense burner, Suou, that is deeply tied to a man named Sataro, who once admitted his love for her. Clues about the item has been hard to come by, but one day, while Tsukuyomi and Ohime are lent out to the Tsuru-ya, they overhear that another person is also searching for Suou. Upon hearing about the conversation, Seiji begins to think that the person might be Sataro himself and with a mixture of complicated feelings he starts to search out more information on this individual.
Hisoku would be referring to the celadon 
porcelain vessels that were served
المقصود بهيسوكو هي الأواني الخزفيّة 
ذات اللّون الأخضر الباهت الّتي كانت تُقدّم
Hisoku könnte man mit den
seladongrünen Porzellangefäßen vergleichen,
Hisoku era la porcelana que usaba
Hisoku era la porcelana que usaba
« Vert céladon »
désigne aussi la porcelaine
Hisoku è il termine che
 si associa ai vasi di porcellana celadon
Hisoku são as porcelanas 
cinza esverdeadas que usavam pra servir
Фарфоровые сосуды, 
покрытые селадоном, окрашивали в хисоку.