Yui Shishido is a fictional character from the multimedia project Project Sekai: Colorful Stage! feat. Hatsune Miku. She is a member of the virtual idol group Vivid BAD SQUAD, known for her energetic personality and passion for music. Yui has a distinctive appearance, characterized by her colorful hair and stylish outfits that reflect her vibrant character. In the storyline, Yui is portrayed as a determined and cheerful girl who strives to connect with others through her performances. Her character embodies themes of friendship and perseverance, making her a relatable figure for fans of the series.