Oh.
She got Persona 5'd All Out Attack'd through the supportive power of huge breasts and the explosive damage of emulating button popping from uncontained huge breasts.
Actually, considering the standing stance, it's closer to Phantom X's all out attack with a stance similar to Wonder, rather than Joker. Though more accurately the All Out Attack finish paired with the pose of the Highlight.
Not going to link up Wonder's all out attack. I'm going to assume most people already know what a Persona 5 all out attack looks like. But the highlight looks far closer to the actual attack done here, just with the added flair of an All Out Attack splashy screen finisher.