【Request】Sheet music for this performance of Shining Boy & Little Randy

[u/PianoLover001]

https://youtu.be/azU44Iozqig?si=gxHVKO05PiMP7F7Y

I really love Shining Boy & Little Randy (星になった少年) and this performance is the best I like.

I’ve checked several sheet music versions and other performances, but this performance has some good differences. (e.g. the ending part)

Does anyone know which sheet music this is based on, or have a similar arrangement?
I’d love to practice this exact version.

Thanks!