Speed of sound Sonic x reader (On Hold)

Okay, so this is about Sonic, our favourite ninja (if he isn't, you probably wouldn't have clicked on this book =P). You are a 24-year old girl and you just moved to Z-city. You're Saitama's younger sister, but you haven't talked to him in 5 years. You were born with the rare power to control the elements and you've...