CHAOS AGAIN

The piano section that comes after the stage clear is the real deal.

(19) Once you get used to the high-speed run in the middle, your side-twist footwork will follow, and you'll be able to pass this part with full HP! If you do that, you're very close to clearing!!! But the ending is despair... In my experience, hit all the notes in the section where the 'danmuji' (bracket) appears, maintain your HP as much as possible, and drag (hold) hard in the back. Depending on your playstyle, you might be able to handle the very last part by looking to the side and hitting the 3-note chord. But seriously, why are you in the middle? Get up to the top already!

사이드가 너무 어려워요

Assuming there are no 5-note patterns, the end is just too hard.