It was said that Sorin was impressed with Western medical technology when seeing the advanced emergency treatment of Western medicine when his younger brother was injured by accidental firing from a teppo (gun) introduced by a southern barbarian in its trial shooting in his early years.
若い頃、南蛮人が持ってきた鉄砲が試し撃ちの際に暴発して弟が手に怪我をしたが、その時に進んだ西洋医学による応急処置を見た宗麟は西洋の技術に感銘を受けたといわれる。