The way the nurse was glancing at Kanji made Naoto frown. She must have put two and two together, but the chair's current state and his appearance gave the nurse a reason to scrutinize. Naoto's weariness isn't helping probably.

"It was an accident. He leaned too far back and the legs snapped... I moved to check if he was fine."

After the explanation, she spoke quietly to the nurse, using her good hand to point to her side.