She'll often refer to her time alone with Kei as 'dates', tell her friend Akira that she and Kei are in a 'burning love' note a joke on the expression used by the media when Kei and Akira were rumored to be in a relationship and several chapter covers feature them in intimate poses. It intensifies after the shooting of Death Island where they had to share several scenes, especially on Chiyoko's part.
Act-age has some playful subtext between the protagonist Kei and her fellow actress Chiyoko.