Nanase, Aya

七瀬綾（ななせあや）

A cheerful, gentle little sister who is always smiling.
She enjoys cooking, doing the laundry, cleaning, and other household chores. With both parents away, she looks after everyone.
She has always loved her older brother as a man, and thinks about how she would want to be lovers with him.
"But I'm his blood-related little sister!" she says, taking a step back while worrying about that every day.