Yoshie Takiyama is the mother of Rikyū Takiyama, a young boy studying judo in France who holds significant respect for Kiyotaka Yagashira. Her surname, Takiyama, combines the characters for "waterfall" and "mountain," while her given name, Yoshie, means "good" and "bay" or "inlet."

She shares a relationship with Seiji Yagashira, Kiyotaka's grandfather. Seiji, known for his appreciation of beautiful things, exercises caution in his interactions with her. Despite being in her 40s, Yoshie possesses a notably youthful appearance.

Physically, she has brown hair typically styled to shoulder length and lilac or pink-colored eyes. Yoshie also has a birthmark or mole, its location unspecified.