未来的低音

I played it in a game and thought why not bring it here :D

19-4-14: Redid the whole thing to be more readable.
Hard and extreme are now playable.
I fix the syncing a bit.

EASY = ☆3
NORMAL = ☆4.5
HARD = ☆6.5
EXTREME =☆8

词：御江
曲：純白P
动画：系豆沙