In early 1920s Osovskaya was invited to become a professor at the Takarazuka Revue in Takarazuka, Hyogo Prefecture, Japan, then Metter moved to Japan also in March 1926.
Itsuo Museum holds the Itsuo Collection which is mainly Japanese art for cha-no-yu; Ikeda Bunko holds collections on Takarazuka and other materials related to Hankyu Dentetsu.
Having spent her entire Takarazuka career in Snow Troupe, she was the second regular star partner of legend Mari Hanafusa and is most remembered for two roles: Franz Joseph (the first of Takarazuka to be in this role) and Viscount Valmont of Kamen no Romanesque (The Takarazuka's adoptation of Dangerous Liaisons).