The Yumiya which Hercules used is called 'Hercules's arrow' and this is an arrow which Hercules was given by Apollo and coated in the poison of the Hydra, which he had defeated.
ヘラクレスが用いた弓矢を「ヘラクレスの矢」というが、これはアポロンからヘラクレスが授かった矢に自身が倒したヒュドラ（ヒドラ）の毒を塗ったものである。