Name: Naho Shindo Height: 165cm Gender: Female Age: 17 (11th Grade) B-cup Wataru's next-door neighbor and childhood friend. She is the one who told the other two friends after Wataru consulted her about winning the lottery. She acts as the leader, planning to surround Wataru with Carrie and Shuna to create a harem and secure their own happiness. She has liked Wataru for a long time.

Name: Carrie Samejima Height: 164cm Gender: Female Age: 17 (11th Grade) C-cup A girl working as a model; her father is French and her mother is Japanese. She moved here in elementary school and is always with Naho and Shuna. She speaks mostly Japanese but uses French with her father. A close childhood friend of Wataru. She heard about his 1 billion yen win from Naho. She dreams of spending fun days with Wataru alongside Naho and Shuna. Thanks to her parents' influence, she is knowledgeable about tax matters.

Name: Akane Kitao Height: 159cm Gender: Female Age: 17 (11th Grade) C-cup Wataru's childhood friend who lives in the neighborhood. They always played together until elementary school, but grew distant in middle and high school. She has been inseparable from Naho and Carrie since elementary school. Upon learning Wataru won the lottery, she regrets the time they spent apart and tries to get close to him again. She starts dressing like a gyaru as he buys her various things. She has a bit of a naughty side.

Name: Wataru Morobishi Height: 172cm Gender: Male Personality: Quiet Age: 17 (11th Grade) Childhood friend to the three girls. He won the 1 billion yen first prize in the Jumbo Lottery and consulted his childhood friends about it. His fate changes, and from that day on, he finds himself being played by the three of them. He is kind-hearted and serious at his core, but he has a hidden perverted side.