In the beginning of the Showa period, when Japan expanded their colonies in neighboring countries, there was a huge demand for personnel who had sake brewing skills in overseas territories (the places outside of the mainland of Japan), and many schools sent toji and kurabito to such places.
日本が近隣諸国に植民地を拡大した日本酒の歴史昭和時代前期には、いわゆる外地（本土以外の地域）で日本酒を製造できる人材の需要が非常に高く、多くの流派はそういう地へ杜氏や蔵人を派遣した。