Flat throwing stones with sharpened corners unearthed in Saitama.

RANZAN, Saitama Prefecture--Artifacts labeled as “groundbreaking discoveries” from the ruins of structures associated with warlord Toyotomi Hideyoshi’s Siege of Odawara in 1590 could have been prototypes of ninja weapons.

Akihiro Iwata, an archaeologist and curator at the Saitama Prefectural Ranzan Historical Museum here, said the flat stones and clay balls may well have been the forerunners of “shuriken” throwing stars and “makibishi” caltrops that later made up ninja arsenals.

Iwata came to this conclusion after re-examining items from the late Warring States period (late 15th to late 16th centuries) excavated at archaeological sites in Saitama and the western Tokyo city of Hachioji.

For the full article, please see: https://www.asahi.com/ajw/articles/14514335

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