The characters Oko and Seiji, a clever man who is known to solve mysteries, run a lending shop in Tokyo, renting out old items.
Voiced by: Junya Enoki Oko's younger brother Oko and Seiji own and run the Izumo-ya lending shop in the Fukagawa district of Edo. Seiji is clever and, with the help of the tsukumogami, has a reputation for being able to solve mysteries and other difficult problems. Tokyo Several of the items they lend are old and have become tsukumogami. 
