Komiyama Yukie

The wife of Daisaku even though she's still only a 10 year old 4th grade elementary school girl. Their families agreed to have them marry before she was even born. She's worried that Hanako acts more like his wife than she does so she does her best to cook and clean for him even though she has a maid for that.

She listens to her mother in law explain the duties of a wife and works very hard to fulfill her expectations in everything. She worries that if she doesn't that Hanako will.