"Junigetsu Orai" (Twelve Months Correspondence), which took the form of two letters per month describing the turning of the seasons as well as seasonal events, was composed in the Kamakura period and became a good example for oraimono that followed.
鎌倉時代には毎月2通分の往復書簡で季節感や行事を織り込んだ『十二月往来』が著され、後世の往来物の手本となった。