This training device was further developed by Nakanishi Chuto of the Nakanishi-ha Ittō-ryū and later became an important element in the establishing of the modern sport of kendo.
Alat latihan ini dikembangkan lebih lanjut oleh Nakanishi Chuto dari Nakanishi-ha Ittō-ryū dan lambat laun menjadi elemen penting dalam membangun olahraga modern bernama kendo.