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A character in Love Live! Nijigasaki High School Idol Club. She's very competitive and always wants to be number one in any competition. Despite her cute appearance and childlike mannerisms, Kasumi spends a lot of her time scheming or thinking up new ways to ensure her own victory.
She has red eyes and short, grey-brown hair in a bob cut with one side slightly longer than the other and a crescent-shaped hairclip. She wears a brown cardigan under her blazer with the winter uniform and a custom argyle sweater vest for her summer uniform.
She is a member of QU4RTZ.
Voiced by Sagara Mayu.