User blog comment:Hidden Scorpius XI/My impressions on Volume 4, Chapter 6 (Tipping Point)/@comment-4010415-20161212044413/@comment-4010415-20161214051400

@HSXI

"The animators added each shimmering to SHOW US that her Aura was getting reduced/depleted. The slow-motion was used to signify the point Ruby's Aura hit the zero mark. If they added a gleam each time she took a hit after that, it would've been redundant, because we already know that her Aura is getting depleted."

... The very first time it happened in the fight, everything went slow-mo, and then it happened 3 more times after that.