Iori has grown up with a deep complex of hating to lose, and thus rarely shows any weaknesses. Iori hates being overshadowed by her father, who constantly brags about his economic successes.
She does, however, have a much softer side that she shows from time to time, making her personality that of a perfect tsundere character. The stuffed rabbit that she carries around with her constantly is named "Usa-chan", which has been with her since she was little, especially because she is frequently left alone in the house.
Iori is shown to be close to Yayoi, she once invited her to sleep over at her house. Iori once said that Yayoi's house is as big as her(Iori)'s dog's house.
- In The iDOLM@STER 2, Iori makes an idol group with Ami and Azusa called Ryūgū Komachi. She also changes her hairstyle, leaving a bang out of her hairband. In iDOLM@STER, she didn't have any bangs and pull her hair back with her hairband. She is voiced by Rie Kugimiya and Ai Kayano, respectively.
In episode 7, Iori is on a show that is touring her house. She gets angry when the host mentions how lucky she is to have such successful brothers and father, so she proclaims that she is an idol and demands that talking to her is a privilege. The producer states that he wishes she talked to him about this first. Afterwards, she is invited to Yayoi's house with Hibiki and they go to a supermarket to buy groceries. Iori has never been to a "commoner's market" before and when she picks out groceries, she just randomly chooses a bag and tosses it in. She is surprised to see Yayoi know so much. When they get to the house, Hibiki and Iori help take care of the siblings while Yayoi cooks. At first, Iori doesn't like the beans but when she tries it, she thinks it's delicious. Later on, when she runs away, Iori calls the producer and asks him for help for the first time. She says she's not sure where common people would hide but she would hide in her own house. That's when she finds him and tells him she used to always hide in the storage room.
- Voiced by: Ai Kayano
- Age: 14/15
- Height: (Im@s 1: 150cm) (Im@s 2: 153cm)
- Image Color: Pink
- Image Songs: "Here we go!!", "Futari no Kioku", "Rizora" and "DIAMOND"
- Personal Songs: "Here we go!!", "Futari no Kioku" and "Watashi wa Idol♥" (shared with Haruka)