|Birthday Date||Octuber 25|
|Home Place||Seinaru hikari|
|Relatives||Kanesuzu Hotaru (daughter)
Kanesuzu Akaiko (Granddaughter)
|Season||Triple Colour◇Pretty Cure!|
Yamaoka is a careful and gentle grandfather and father. He workhard to take care of Akaiko and is very friendly with her. Yamaoka is rich, so he gave Akaiko whatever she want, but she deny being pampered. He likes to spend time with his granddaughter and daughter and loves them very much. Yamaoka always tries to make Akaiko not think that her parents have abandoned her and always explains why she is about his and Hotaru's care. Yamaoka makes Akaiko not feel that her emotionality makes her weak and supports her friendship with Inori.
Kanesuzu Akaiko: His granddaughter. They live together and Yamaoka is usually pampering Akaiko. Yamaoka makes Akaiko not feel that her emotionality makes her weak and supports her friendship with Inori. Akaiko calls he grandpa. (おじいちゃん)
Kanesuzu Hotaru: His daughter. They live together and are both responsible for Akaiko.
His name means "Mountain Hill Bell"
- His birthday falls on Octuber 25 making his of the star sign Scorpio. (♏)
- He shares his birthday with his granddaughter.