There are the Sheet Music PDF and MP3 file of Ru's piano cover “灌籃高手THE FIRST SLAM DUNK Movie Main Theme - 第ゼロ感 Dai Zero Kan”
You can enter US$2 or more to support RuRu and get sheet or MP3. (請輸入美金$2或以上金額來獲得樂譜或MP3音訊)
Here is the YouTube video: https://youtu.be/CXM14OSRqa4
Arranged and Performed by RuRu. (鋼琴改編及演奏: RuRu)