• The intro is a sequence of chords.

Some theory about chords can help to play them: as in this video: https://youtu.be/YkvOGjrmN8k

And here

• These are the chords of the intro. I first play them slowly, than in tempo.

PS. The piano in the video you linked is tuned a half tone lower!

You have to try out how to play those chords. You have to decide what fingers to use, depending on what is most easy for your hand:

The piece is transcribed on 4 pages. The video is split the same: one video per page.

It is played very slowly to make the fast notes clear.