"実は誕生日なんです!" (in Japanese). Chiharu Sawashiro's blog. December 20, 2010. Archived from the original on September 14, 2021. Retrieved November 11, 2021.
"実は誕生日なんです!" (in Japanese). Chiharu Sawashiro's blog. December 20, 2010. Archived from the original on September 14, 2021. Retrieved November 11, 2021.