This sheet music is the piano solo score of "Small First Step (小さなはじまり)" from the OST of the Japanese Movie "The Last 10 Years (余命10年)".
▼Please enjoy referring to the performance video!(2nd song 03:55~)
https://youtu.be/cXnnC9XHNP0?t=235
▼Click here for the "The Last 10 Years (余命10年)" sheet music set