mihara school japanese sword

MIHARA SCHOOL(三原派) was a Japanese sword school founded by Masaie(正家) in Bingo province.



  • Kamakura period to Muromachi period.

Famous Swordsmiths from the school

  • Masaie(正家)*founder
  • Masakuni(正広)*son of Masaie
  • Masamitsu(正光)


Shape : Narrow blade with a high SHINOGI-JI(鎬地) and a thin MUNE(棟).
Hada :
Finely-grained MOKUME-HADA(杢目肌).



  • The Mihara school is used to be underrated at first, but this misjudgment was corrected once their swords proved its sharpness during the war times. Actually, in the record of sword sharpness called Kokon Kaji Biko (古今鍛冶備考), the school founder Masaie(正家) is rated to the top rank Saijo-O-Wazamono(最上大業物). Other than him there’re only 3 smiths from the KOTO(古刀) among the top rank. Namely; Motoshige(元重) and Hidemitsu(秀光) of the OSAFUNE SCHOOL(長船派) and Kanemoto the 1st generation(兼元初代).
  • The school swords have the characteristics of the YAMATO Tradition(大和伝) and the school smiths are considered to have had a chance to learn the Yamato tradition techniques.
  • The school’s old works from the Kamakura to Nanbokucho period are categorized to the Ko Mihara(古三原) and the school’s later works in the Muromachi period are categorized to the Sue Mirhara(末三原).
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