When all the calculations line up to skip Sparxiecon's 2nd phase
Blade dying is actually needed so I have to let the boss move before AA eagle Sparkle.
So Sparxiecon action advances if her HP drops to 75% or below if she hasn't activated the live showdown. Lo and behold I managed to get her down to 75.xx% (so in decimal still higher than 75%) so I didn't trigger her AA that could overtake Mem. That 1% phase 1 for Mblade's skill is a requirement.
This 0 cycle run has been very fun. It's a combination of energy management + SP management + damage control + Mem charge management + Blade's HP management... etc. Every move is calculated. It wasn't easy, took me 100+ tries but the end result is satisfying.
Team is 11 cost. E1S1 Archer, E1 S1 (Sunday sig) Sparkle, E6 S1 (Hyacine's sig) RMC, E2S1 MBlade.