Kumiko leaves home to attend college, where she meets sophomore education major Kenichi.

Kenichi applies for a job in Yamanashi; Kumiko finds a ray of hope for their issues.

Kumiko and Kenichi are married and teachers; Kumiko is assigned a supposedly difficult class.

Following her discovery about Kenichi's activities, Kumiko struggles in her job at school.

Kumiko finds supportive online forum; one of the group members turns out to be a man.

Kenichi and Kumiko are separately pursuing physical gratification; his bank balance shrinks as she falls deeper into despair.