Yumiko Toomi  

, 日野 弓子

Mayas elder sister Yumiko is a doctor/CDC operator who acts as a mentor for fafner pilots. She used to dream about being an idol in Tokyo but later realized her situation. Before Michio's departure, she dated him and their relationship rekindled after he returned. Afterward, she moved in with him to make the most of what was left of their lives. Yumiko is the first naturally fertilized woman in Japan in 30 years.