This is the Sheet Music PDF of Ru's piano cover “約定的夢幻島 The Promised Neverland OST - Isabella's Lullaby (2022 ver.)”
You can enter US$2 or more to support RuRu and get sheet. (請輸入美金$2或以上金額來獲得樂譜)
Here is the YouTube video: https://youtu.be/BLxZQlLKKFg
Arranged and Performed by RuRu. (鋼琴改編及演奏: RuRu)