Ruri is the younger Himeyuri twin. She is one school year younger than the protagonist, and is in the same class as Sango. She is fiercely protective and possessive of her sister, and when Sango finds herself attracted to Takaaki, Ruri becomes jealous and even hostile towards him. She is an excellent cook, as well. Unlike her twin sister, Ruri is not very bright and cannot develop robots.
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