Talk:Episode 43 - The Chocolate and Song That are Full of Feelings☆/@comment-29742182-20170209095252/@comment-30886579-20170209125322

I think it is still progression aura but it is the fruit of her hardworking efforts and she learned to control for a period of time, which is much like Hime, she always pulls on progression aura now but because her body is able to afford this aura due to a lot of exercises… Now Yume can pull it on always to boost her performance as well without hurting her voice…

In conclusion a progression aura should be power that pushes gifted idols to work hard to afford the power, relying on it too much can cause harm, but if exercising a lot it can boost performance.