Plana

The main OS of the Shittim Chest and Arona from another timeline. She is the manifestation of the damaged Shittim Chest from alternate timeline shot by Shiroko Terror, before reactivating when Phrenapates appeared. Unlike Arona, despite also being the AI of the Shittim Chest, Plana generally spoke with simple commands, such as "understood." However, after parting with Phrenapates, she begins speaking more normally, though she often still speaks like a stereotypical computer AI by using simple formal response phrases. She calls Arona "Arona-senpai".