The reason why I can fly is one of the contents within "Sakuya-chan's 99 Secrets"...

...but I'll give you a hint with this song just for you, Rinnosuke-san.

Hint with this song?

Cha~la♪ Head-Cha-La♪ First opening theme of Dragon Ball Z.

Whaaaat?!! Are you serious?!! It's the same as that?!!!