Yep! Ms. Shiimada, (I think that was her name), is transgender, and dating Kei’s aunt, who is the school nurse.
She more or less just gave Yuuki the green light to dress in a girl’s uniform, so he can “be himself.”
@Draken
Well, that may be part of it, but I don’t think she knows about his presentation choices.
She knows Kei had a job, and was comfortable in it, but I don’t think she met him before.