The shape of the roof is modeled after
Ichimegasa in Heian Period(794-1192 A.D.),
Ichimegasa in Heian Period(794-1192 A.D.),
which is the straw hat worn by women.
About Ono-no-Komachi
https://en.wikipedia.org/wiki/Ono_no_Komachi
All right reserved ©Rika Inami 稲美理佳2017