|Relatives||Yuuki Kaga (Son)|
Haruko has short grey hair that is similar to her son's hair and matching grey eyes.
Yuuki is Haruko's son.
Miyoko is Haruko's friend who live next door to each other.
- The name Haruko means "spring" (春) (haru) and "child" (子) (ko).
- Haruko's surname Kaga means "add, increase" (加) (ka) and "congratulations, joy" (賀) (ga).
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