河西結心 (Kasai Yuumi) is Japanese pop singer under Hello! Project as a member of Tsubaki Factory.
Known For: Acting
Birthday: 2003-07-30
Place of Birth: Yamanashi, Japan
Also Known As: Kasai Yuumi, Yuumi, ゆうみ, Yuttii, ゆってぃー, Yuu-chan, ゆーちゃん, Kasai Yuumi (河西結心)