[Luckily, he doesn't seem to have noticed her awkwardly failed attempt at bowing, while focused on the motion of his own bow. Ishimaru cracks a light smile in response to her comment.]

Why thank you! It try to put my all into anything I do. [Including just greeting people. He might have had a lot of reasons to be depressed in recent times, but this camping trip has helped him to raise his spirits and his energy so far.

Then he proceeds to pause as he considers her question.]

Hmm... In the future, I would advise you to be more prepared! However, I made sure to bring many supplies that I found from the hallway closets. I am sure that there is a spare one that you could make us of!