Kizaki Sae

Harukii's wife. She's 39 years old and the two of them have been married for 20 years. When Sena tells everyone at the dinner table that she saw her father playing with the breasts of another woman at school she leaves him. She thinks that life without sex for a month will be punishment enough to get him to learn his lesson. Afterward he often sees her in dreams.

When she moves out she takes Sena and Kanami with her. After two weeks she lets them move back in with their father while she takes Ayame and Hyouka instead.