after winning the all japan figure skating championships in january 1983, osada was sent to the world championships in copenhagen in march, 1983. there, she made a series of errors in compulsories, in which she placed a disappointing 24th. in her short program, she missed the triple loop jump in her combination, which only allowed her to pull up to 21st after this segment of the competition. due to the new rule instituted in the 1982–1983 season (which, incidentally, was abolished after that season), osada was unable to skate her free program in "group a," or the main competition consisting of those who placed 15th or above after short program. instead, she was placed in "group b" and won the free skate, which resulted in the 3rd-place finish in "group b"--or 18th overall.