One of my favorite things to think about/headcanon for Haruka is the care and pride I see her putting into making the best of what she has in regard to her presentation. Like.

Ironing perfect creases into her thrift store clothes

Gelling her self-cut hair to perfection

Spending hours on youtube learning how to tie a tie until she can do it without a guide

And then it all ramps up to eleven when she meets Michiru