Name: Yumi. Age: 17 years old (high school student). She has an idiosyncrasy. Therefore, her muscles can grow like that big. Then, she has superhuman strength. She can easily manipulate where is muscle will grow and how much. Her personality is gentle and less talkative. She is about 168 centimeters tall. Measurements: With muscles (Maximum): Bust: 240cm; Waist: 70cm; Hip: 105cm; Biceps: 240cm; Thighs: 125cm; Calves: 70cm. Without muscles (Default): Bust: 115cm; Waist: 65cm; Hip: 90cm.