Dia's not hiding. She might be huddled with her knees to her chest underneath the school's biggest staircase, but it's not hiding. It's a habit carried over from when she was young -- small, closed-off spaces like this would always offer comfort when the world outside proved just a little too much to handle.

She doesn't do it much, anymore. It's unsightly now that she's grown; the student council president and future heiress of the Kurosawa family has no business lurking under stairwells at seventeen. Dia knows this. But she couldn't stand staying in the clubroom even a moment longer, and she doesn't want to leave for home yet, either. Some childish part of her refuses to get too far, just in case Mari comes after her... but when she finally does hear her voice from down the hall, she only hugs her legs tighter in stubborn silence.

No, she won't call Mari over. The least she could do is come all the way here herself.