Kyōko Toshinō

She's a 14-year-old second-year junior high student with straight, long blonde hair and a reddish-brown ribbon tied at the top of her head. She's Akari's best friend and is treated as a secondary protagonist in the series. Quite the go-getter and marches to her own beat. Her carefree words and actions often perplex those around her, and she tends to act on impulse, causing trouble for others without any malicious intent. Sometimes, she reads the mood and shows concern and consideration for other characters. She also often serves as the straight man when Akari, Yui, Chinatsu, Ayano, and others play the fool. She has a surprisingly sensitive side and was genuinely upset when she realized that Chizuru didn't like her. Like Yui, she's one of Akari's childhood friends, but her personality and protagonist-like qualities are the exact opposite of Akari's, making her practically Akari's natural enemy, though neither of them realizes this. Typically, she doesn't study hard, but she has a brilliant mind capable of placing first in her class after cramming the night before a test.

She doesn't hesitate at all to kiss other girls, such as when she fell in love at first sight with the freshman Chinatsu, who looks just like the protagonist Mirakurun (voiced by Ayana Taketatsu) from the show-within-a-show "Magical Girl Mirakurun," and dragged her into joining the entertainment club. She constantly makes advances towards her favorite people, trying to see Ayano naked, asking for mouth-to-mouth from Yui, her longtime companion, and always insisting on kissing and hugging Chizuru whenever they meet.

She is active in the dōjin scene under the pen name "Ramuko Nishikyogoku."

In the popularity poll from the second volume of the original work, she ranked first.