You can see two beautiful birds in the second 
 floors.  They shine like feathers of pheasant 
 or peacock.
Color material used in the birds are 
said "Lapis lazuli". In particular, one of the 
"Lapis lazuli" component, Nozean, that has a 
characteristics of emitting fluorescence under 
natural light.
Mark of Kanji 「左伊」 is a signature of the 
artist, plasterer Ikichi, producing these 
KoteE works. The founder allowed him to draw 
Ikichi's signature in space under the eaves,
instead of not working other than the founder.
It was a monopolization of the outstanfding 
artist. What a luxury he was.