This episode reinforces the series' central conceit: the "Other World" battles are not just for show; they represent the characters' attempts to process and "kill" their own emotional trauma so they don't have to feel it in reality.

We see Yomi's jealousy and isolation spiral, leading to her becoming the "victim" of the psychological manipulation surrounding the series' core themes of emotional pain. 2. Visual Spectacle: BD 10-bit Quality

The roles have reversed—where Kagari was the "burden," Yomi is now the one spiraling into darkness, setting the stage for the catastrophic events of the final episodes.