An event held on May 5, in which children are divided into two groups and throw stones each other like wars in the Sengoku period (period of warring states) is also called "Inji."
なお、五月五日に大勢の子供が集まり、戦国時代の合戦をまねて二手に分かれて石を投げ合う行事もこう呼称する。