A childhood friend of Tadano's from middle school—their name literally means that. Najimi's pretty much been around forever.
Here's the thing though: Najimi shows up to school in a girl's uniform paired with a boy's tie, which is kind of their whole deal. But when Tadano thinks back to middle school, he remembers Najimi wearing a standard boy's uniform. So yeah, their appearance has changed, and nobody's entirely sure what's going on with that—including Tadano, who finds the whole situation pretty confusing.
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