Looks great! Bubble art, dialog art, and menus are all very polished.
It does feel strange to me that a combo game in the vein of Bubble Shooter, Tetris, Puyo Puyo, or Suika doesn't directly punish the player for building up too much "junk" without clearing it. In this way it feels somewhat imbalanced, as there's not as much downside to stockpiling.
But, it's still enjoyable :) Well done