For the uninitiated, Tokai Teio's voice actress, Machico, sang Tropical-Rouge! Precure's theme song obviously, that's point one.
Point two, if you look at the drawing, Teio is even singing the song, hence the lyrics drawn on it. as well as performing the same dance moves as seen in the opening sequence, alongside with Mejiro McQueen.
Yeah, that's all you need to know. I hope this informative comment clears some things up for you.
