Oh! Milady is a character from the Three Musketeers. [Haru thoughtfully puts a hand to her chin, glancing upward.] Specifically, one of the antagonists. I suppose that does make sense, considering the Phantom Thieves were on the darker side of the law.

[Sure, Naoto's a detective. But it's not like the Phantom Thieves are a thing here, and the group's already told them who and what the Phantom Thieves were, so she's not worried.]