- The name Ikuko means "fragrance" (郁) (iku) and "child" (子) (ko).
- Ikuko's surname Tachibana means "orange, tangerine" (橘).
- Ikuko's former surname Kamio means "god" (神) (kami) and "tail" (尾) (o).
- It is possible that Ikuko passed away in an accident or illness
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