崩壞：星穹鐵道 Honkai: Star Rail OP - 何者 Nameless Faces - Ru's Piano

There are the Sheet Music PDF and MP3 file of Ru's piano cover “崩壞：星穹鐵道 Honkai: Star Rail OP - 何者 Nameless Faces” 

You can enter US$3 or more to support RuRu and get sheet or MP3. (請輸入美金$3或以上金額來獲得樂譜或MP3音訊)

Here is the YouTube video: 

Arranged and Performed by RuRu. (鋼琴改編及演奏: RuRu)