In 1912, however, HIRASE, together with Seiichiro IKENO who can be said to have been his mentor, was awarded Onshi Prize (the Imperial Award) (by the Japan Academy), for their highly evaluated discoveries of gymnosperm spermatozoids and cycad spermatozoids respectively.
しかし1912年、恩師ともいえる池野成一郎とともに、それぞれイチョウとソテツの精子の発見を高く評価されて、恩賜賞(日本学士院)を授与されている。