this is related to AmazingPuffhair's art "Tennis Sonata"!!! ↓↓↓Tennis Sonata: amazingpuffhair.deviantart.com… AmazingPuffhair's profile page. ↓↓↓I was very impressed the moment I watched that her art "Tennis Sonata", and that art really very inspired me to want to draw Aria playing with that Sonata!so I sent note to her and asked if I could draw such like this Aria's art, and she gladly agreed to it! XDThank you so soo much AmazingPuffhair!