In 1974 Hart began working for the Japanese promotion International Wrestling Enterprise, he first worked in a match against Katsuzo Oiyama in Sagamihara. Hart was sent to Japan primarily to train since his father wanted him to get more experience and discipline. Hart's brother Bret has stated that Hart suffered through a lot of stress and was unhappy during this period. Hart has claimed that his time in Japan caused the breakup with his then girlfriend and mother of his first child, Marla.