This sheet music is the piano solo score of "Because You Were Here (お姉ちゃんがお姉ちゃんでいてくれて)" from the OST of the Japanese Movie "The Last 10 Years (余命10年)".
▼Please enjoy referring to the performance video!(8th song 16:11~)
https://youtu.be/cXnnC9XHNP0?t=971
▼Click here for the "The Last 10 Years (余命10年)" sheet music set