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After the liberation of the Last City from the Red Legion, Chalco noticed that Ikora Rey had stopped taking field assignments. In response, she snuck into Ikora's private library and discovered her friend studying. Hoping to surprise Ikora, she spoke and said that she had been wondering what Ikora was up to. Ikora, unsurprised by Chalco's sudden appearance, noted that she was always aware of what Chalco was doing. The Hunter attempted to get Ikora to admit she had successfully snuck up on her, but Ikora reminded her that she had sworn never to lie to Chalco. Disappointed that she failed to surprise the Warlock, Chalco looked at the book she was reading and questioned if studying "On Circles, Volume 12" was worth not doing fieldwork any longer. Ikora revealed that she was the author of all twelve volumes, and that the awakening of the Traveler had changed their understanding of physics and required her to rewrite the series. Chalco was skeptical that even their knowledge of circles had been altered by the Traveler, but Ikora insisted that circles especially had been changed.
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