【Unused/Unopened】Amano Self-Played Grand Piano

I received this about 8 years ago from my piano teacher.
I kept it stored because I felt it would be a waste to open and use it.
As it has been stored for a long time, the outer box has scuffs and scratches (T . T).
Please check the 3rd image (>_<).
I will give it to someone who understands this.