Kyoko Tsumugi is the lively and intuitive mother of Rintaro Tsumugi and Sotaro Tsumugi, and the supportive wife of Keiichiro Tsumugi. Known for her generosity, sharp instincts, and a signature ponytail, Kyoko lights up their family-run cake shop with both warmth and confidence. She calls her husband affectionately "Kei-chan" and often draws Rintaro into helping at the bakery when things get busy. Through her actions and heartfelt encouragement, Kyoko plays a pivotal role in her family's personal growth, cheering them on through every challenge and change.