Usually, in certain maps, there were only two or three arrows at once since the game was usually played with two legs. However, the song that Tatsuki chose was the most difficult song in the game, and there were instances when four arrows should be pressed at once.
The only way one could finish the song with a perfect record was if they use their hands. However, there were certain steps that should be met before doing so because if one were to use their hands at the wrong timing or placement, they would lose the entire streak and instantly get a game over.
Tatsuki was well aware of this. That's why he studied the map until he found the best way to clear it. Some people could clear it with just their legs while hanging onto the bar so they could have balance. However, no one could finish the map without using his or her superpower. That's how difficult it was.
So I was thinking about resting for a bit, and what better way to do it by writing filler chapters heuheu
I'll get back to the main story soon, don't worry >//<