Arknights, But Keeping Terra in Captivity

"If the Earth were shrunk to the size of a glass marble with a diameter of 1 cm, then the Sun would be about 117 meters away from the marble, a sphere with a diameter of about 1.09 meters. Coincidentally, it fits perfectly in my living room." A solar system model, a very common type of popular science textbook. Chen Ran was sure he had simply turned his head, but how did this solar system model suddenly come alive? "Terra? This planet model says Terra?" Which Terra? "Planet native detected: Skadi..." Oh, this Terra, Arknights, right? And Skadi, the killer whale. "Skadi is leading the Sea Si herd in an attempt to break through the star pod." The translucent bullet box flashed for a few seconds, completing the following paragraph. Chen Ran: "?" Wait a minute? Which Skadi is this? Which world line's Terra is this from?