On December 26, 1987, Masami faced Chigusa Nagayo in her mandatory retirement match upon reaching the age of 25.
On November 2, 1996 in Singapore, Chigusa Nagayo defeated Masami in a match to crown the first AAAW Single Champion.
They held the title until they were defeated by Chikayo Nagashima and Meiko Satomura on September 23 of that year.
Masami wrestled in the main event of AJW's final card on April 17, 2005, teaming up with Amazing Kong to defeat Kyoko Inoue and Misae Genki.
Her retirement match was on December 30, 2008 where she teamed up with Dynamite Kansai and Carlos Amano to lose to Aja Kong, Toshie Uematsu, and Ran Yu-Yu, when Uematsu pinned Masami with a Dragon Suplex.