Delta

Delta makes her appearance right after Sirin's magic practice ends, wanting to see the Ether Anchor in her possession, as she needs it to complete her mission. Sirin wonders whether the intel she received was fake and that the stone in her possession isn't an Ether Anchor at all, but Delta denies it, saying that there aren't many things that look like an Ether Anchor in the bubble universe besides the stone, and that it's also different from others she has seen as the one in her possessed by Sirin appears to contain no energy at all. As Sirin was contemplating to herself, something fell out of one of the books, which had turned out to be half a semitransparent bookmark that Delta had picked up and returned to Sirin, while remarking that Sirin's temper reminds her of a frustrated sheep before promptly leaving the room. She immediately returns, reminding Sirin that someone would like to take her to go see the real master of Hyperion, and leaves the room again. After the experiment, Delta becomes much calmer and more serious, her demeanor having become more akin to Liliya's. She had PTSD. Every time she fell asleep, she remembered the day her sister, Liliya, sacrificed herself to help Delta. She also shows annoyance when called by her real name. After meeting the Captain and being invited to join the Captain's Hyperion Crew, Delta starts to show her true colors. While with the crew, she started to socialize more on the Hyperion ship; she befriended every crew member. Delta also often plays games with Sirin and Bronie. Even though Delta rejected the offer to join the crew, she is still invited by the Captain's Hyperion crews when they hold a party on their ship.