Sky is an energetic girl with long blue hair, bright blue eyes, and a distinctive blue-and-white outfit. She is cheerful, expressive, and extremely enthusiastic, especially when it comes to Boyfriend. At first glance, Sky can seem like an ordinary energetic fan, happily talking and showing excitement whenever she gets the chance. However, her admiration can become extremely intense, causing her behavior to become unpredictable. She is passionate about music and isn't afraid of a challenge, making musical battles a natural way for her to prove herself. Sky tends to wear her emotions openly, switching between playful excitement, nervousness, frustration, and determination. Her energetic personality makes her difficult to ignore, and even when she's acting sweet, there is often a noticeable intensity behind her enthusiasm.