I haven't been able to find an official screenshot showing this, but fan art of Yui seems to be consistent in showing the cords being part of an. Characters. > Yui Yuigahama. > Pictures · Add a picture. Pictures. Yui Yuigahama. Report · Yui Yuigahama · Report · Yui Yuigahama. Report · Yui Yuigahama. Yui Yuigahama is a student in class 2F of Sōbu High School and the first official customer of Yui Yuigahama/Relationships · Yui Yuigahama/Gallery · Service Club.