This sheet music is the piano solo score of "Kazuto's Confession (和人の告白)" from the OST of the Japanese Movie "The Last 10 Years (余命10年)".
▼Please enjoy referring to the performance video!(6th song 10:50~)
https://youtu.be/cXnnC9XHNP0?t=650
▼Click here for the "The Last 10 Years (余命10年)" sheet music set