During a retrieval mission, Tsukasa is surprised when the owner of the newly assigned Giftia opts to delete the latter's current personality and memories by replacing her OS and start over from scratch instead of handing over the Giftia proper, having done it several times already. Intrigued, he asks around the office if a Giftia who has gone through that experience is capable of retaining their old memories, but everyone replies there is no precedent to that. Later on, Kazuki announces that a marksman from the Terminal Service No. 3 office will be sent in, as the assigned Giftia and his owner have gone into hiding, and assigns Tsukasa and Isla to assist her. They later meet the marksman, Andie; shortly afterward, they have an awkward encounter with Eru, who mistakes Andie for her friend Olivia. After the mission is a success, Tsukasa learns from Eru that Andie is indeed Olivia, whose OS was replaced due to the company cutting costs. Later on, Eru tells Tsukasa that she reconnected with Andie and mentioned a carnival they used to go to together when Andie was still Olivia, which caused Andie to decide to go there. Not wanting to deal with her memories of Olivia, Eru tries to get Tsukasa to take Andie to the carnival instead. However, Tsukasa convinces Eru to come along, and they take Isla and Andie to the carnival the following night. There, Eru decides to let go of Olivia and create new memories with Andie, concluding it wouldn't be fair to either of them if she saw them as one and the same. Later, Isla gets lost in the crowd and Tsukasa begins searching for her, eventually finding her at a lonely walkway, terrified by exploding fireworks. After he consoles her, Isla brings up Andie and asks if her presence is hurting him. He replies that it does, but insists on continuing to be her partner. When she asks why, Tsukasa responds that it is because he loves her. Shocked and embarrassed by the sudden confession, Isla shouts that she cannot accept his love.