Chikako Asō (麻生 千賀子, also 麻生 ちか子) (born May 30, 1950), née Suzuki (鈴木 千賀子), is a Japanese businesswoman, daughter of the 44th Prime Minister of Japan, Zenkō Suzuki, wife of the 59th Prime Minister of Japan, Tarō Asō, and elder sister of the politician Shun'ichi Suzuki. Her husband is the brother of Princess Tomohito of Mikasa.
Source: “Chikako Asō”, English Wikipedia (CC BY-SA 4.0), excerpt