The Muromachi Shogunate celebrated its annual event of Inoko-iwai or Gencho-shinjo (a celebration of little wild boars by presenting Gencho mochi) on the first day of boar in October under old calendar.
室町幕府の年中行事として、旧暦10月・上亥日に亥子祝い・玄猪餅進上があった。