C1249 Old Disease

He didn't know that Ling Shi was called Sosuke, but it was obvious that he considered Sosuke to be his brother, which was a sign of respect.

In June, he called her Teacher Zosimu [1]. It meant that she was slightly above and below, but not completely above and below. However, she was clearly more respectful than someone who didn't know how to address him.

As for the way he addressed his mother