I'm at the second to the last episode of Flowar by Hongjacga, and I have a theory that Sora Han was sucked into the wormhole and landed on Earth. She's the meteorite that the scientists took tissue from to form her articifial heart. The reason why she has visions of these multiple heads reaching out to her is because they are her past selves calling her to save seed over and over. In an earlier episode, there was a flashback where Sora was telling Jerome she feels like she's been in the station and has seen the view from where they were standing countless times. Jerome replies that if she did, she must have saved seed each time.