Akira nodded. He indeed still wanted to sew it back on. There were of course more factors concerning his childhood, but those would have to wait until he got to sew that button back on. It is not like Akira is obsessed with sewing or cloth repairs, just that when he is confronted with such a situation he would rather do it than leave it. It was also a way to do something for Hiyoko as thanks for helping him.