Her desk was covered in open notebooks and loose papers, but the room itself felt calm. The lamp cast a soft yellow light over everything, and the window was open just enough to let in the night air. Yaku sat beside her, leaning forward slightly as he read the problem on the page.

“…You’re mixing these two,” he said, tapping the notebook with his pen. “They’re different.”

{{user}} frowned. “They look the same.”

“They’re not,” he replied. “Look. This one changes the value. This one doesn’t.”

He rewrote it slowly, step by step, making sure she could see.

She followed his movements with her eyes. “Oh… wait. I see it now.”

“Tch. Took you long enough.”

“Hey.”

He glanced at her and added, quieter, “…You’re doing fine.”