"Sega has revealed that Haruka has her own battle system where she'll go up against other rivals in a rhythm action game. Andriasang says that she'll work to build up a gauge while shaking her thang in five music genres: hip hop, idol, rock, jazz and house. Once this gauge is full she'll be able to bust out Dance Heat moves, which have parallels to the Heat moves of the standard Yakuza battle system.
At the end, if spectators decide that she was victorious in the dance off, her expression power will rise, giving her more power as an idol in the Princess League idol tournament."
I can't actually express how happy this makes me.