he is chinese, not japanese (douyin is the chinese version of tiktok)
this is pump it up (middle and diagonal arrows), not dance dance revolution (vertical and horizontal arrows)
yes this game can be played with 1-3 players, however when theres more than 1 player the colours of the arrows change so each player follows a different colour. this is the default colouring (yellow for middle, red for upper diagonals, blue for lower diagonals), which means this is meant for one person and is probably a custom map for people like him lol
get this post to 10k notes and I'll add a familiar that follows you around in the game.
(Draft designs below)
Purrrple the cat - @crystal--runeheart
Oldwin the dragon - @alhex--the--reporter
Gladius the cat - @the-final-knight
Smokes the dragon - @a-scientist-reborn
Names, designs etc may be changed, some may not end up in final game, as my plans and the game are very heavily in the drafting stage when it comes to new features.