Seiun Sky is quite a capable strategist when it comes to racing. She can keep running at the front even until she reaches the goal. She looks like a lazy girl. One could frequently see her sleeping in class. She just like to chill, but perhaps it's just a strategy to scam others into thinking she's lazy. Once her motivation sparks, she can work harder than anyone. She likes fishing and teasing people. Her roommate is Sakura Laurel and her best friend is Nishino Flower.