After successfully solving the mystery surrounding the missing netsuke belonging to Sakuma Katsusaburo, Oko and Seiji are surprised by a well-known local antique art dealer stopping by their shop seeking their assistance. According to the old man, Hamamatsuya Souemon, the paintings on his hanging scrolls are changing each night and he asks that the siblings help get to the bottom of why. With the assistance of the Izumo-ya's tsukumogami the reason for these bizzare occurences is revealed and sometimes fact can truly be stranger than fiction.
Momotaro and Hikari Genji 
were sumo wrestling?
auf der sich Momotarou und Hikari Genji
im Sumo-Ring gegenüberstehen?
donde Momotarou y Genji Hikari
hicieran sumo?
donde Momotarou y Genji Hikari
hicieran sumo?
Momotaro e Hikari Genji 
estavam competindo?