Dash & Jump
From Starfy Wiki
Dashing & Jumping (Japanese: だっっしゅじゃんぷ, Dash Jump) is an ability that allows Starfy or Starly to jump farther and higher than a regular jump. To do it, the player must simply jump while dashing.
Description from The Legendary Starfy
"If you dash before you jump, you'll leap farther AND higher!"