Ueno was in Ishida's elementary school class and became his closest friend during those years—though "friend" might be generous depending on how you view their dynamic. She had a habit of bossing him around, and she was right there with him when he bullied Nishimiya, serving as his main accomplice. After they went their separate ways following middle school graduation, Ueno eventually crossed paths with Ishida again years down the line. By then, she'd landed a job at a cat café, a pretty different life from their school days.
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