I've no qualms with any of these elims. Don't know Ezra, Spiky-eared Pichu needed to be gone long ago, and Kaori is a fine candidate for first Azumanga boot. She's minor and doesn't provide many comedic moments.
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Courtesy of fr0q - http://img.imgcake.com/gensagajpgqe.jpg
Punny worked hard on this! - http://img.imgcake.com/Punny/Gennypngas.png