Sachiko Kawamura

Sachiko Kawamura is a character that is foreshadowed by Hachi's paranoia that Shoji was cheating on her. It was eventually revealed that Sachiko had been sleeping with Shoji despite knowing he had a girlfriend, which Hachi soon discovered. Her and Shoji got together after his breakup with Hachi. She works as a waitress at the same restaurant as Shoji, and she also goes to the same university as him to study art.