For reference, the sound is rather similar to the first notes in this song too, in fact i've heard this particular sound a lot in j-pop over the years:

https://www.youtube.com/watch?v=qtPEm9ZADZ8
Hello, thanks for the reply! I apologise, I think I may have confused you by comparing the sound to that of a piano, i'm actually talking about the sound of the very first not that plays in the song, not the piano shrills that come after, i'm talking about the single notes that play every four beats...
How do I achieve the the sound of the first bunch of notes you initially hear on this promo track for Tokyo Ghoul:Re? It sounds to me like a processed piano sound with reverb and delay and maybe a reverse effect but I can't put my finger on what gives it that specific timbral character. Would apprec...