Izumi Hiyori

Creative Skill: Voice Actress
Special Skill: Rock Paper Scissors
Favorite Food: Onii-chan's Chinese Fried Rice
Hobby: Housework

Tomohiro's little sister, and a child star turned successful voice actress.
As the breadwinner of their family, she manages their household finances.
It ends up that in their household, she often spoils Tomohiro when he prostrates to her asking for money to roll gacha.
In reality, she's the one who would go crazy if she doesn't pamper Tomohiro, but he's the only one who knows that.

"So Onii is the student council president now?
This imouto always believed that you could succeed if you tried."

From the official website

She voices characters in the gacha game Tomohiro plays, and is also a singer who Shio is a fan of. Of course, her voice can also be found in the latest anime.