Ai Doruyashi from Yandere Simulator.

The description for Ai from the official Yandere Simulator website.

"A friendly and energetic girl who dreams of becoming a pop star one day.

She is fully dedicated to her dream of being an idol, and is always seeking experiences that will inspire her to write the lyrics for her next song.

She's so serious about becoming a singer that she has set up a stage in the school gym and spends most of her time there rehearsing her performances, with help from some girls from the Light Music Club."