Kyouko Mejiro

Kyouko Mejiro is one of the side characters. She was a member of a literature club in the school where Nico Hirata is a teacher of the night classes 10 years ago. She was Nazuna Nanakusa's first friend. Her mother was murdered, and father disappeared, and after that she quit school and now her location is unknown.

Trivia

 * In chapter 82 it was revealed that she is Uguisu Anko.