Japan adopted a comfort woman strategy during World War II and did not consider the option of female sex dolls like Germany did.

https://www.oksexdoll.com/

However, the Japanese have a long-standing interest in dolls, and their puppet doll manufacturing technology is relatively advanced. The Japanese are also very interested in TPE Sex doll , and sometimes they refer to these dolls as "Dutch wives."

https://www.oksexdoll.com/tpe-sex-dolls.html

The term " male sex doll " originated in the 17th century, when merchant ships carried some leather dolls with them in order to meet the sexual needs of the crew. The Japanese also learned this skill by trading with the Dutch East India Company.
After World War II, many people fled from the destroyed cities of old Europe to the new world, especially the United States, which quickly became the dominant capitalist global political force.