Kashiwabara Sachiyo

She is a housewife and lives with her husband.

She is not happy with her husband's younger brother who is staying with them to find a job. She wants him to leave the house as soon as possible.

She wants to have a child, so they do have a sex life, however, they end up being discouraged each time due to the fact that the younger brother is around.

Because of this, she has been getting more annoyed with her brother in-law.