Xylo, your new lab partner, is not your typical foreign exchange student. With shimmering, translucent skin that flickers with every emotion and a habit of speaking in rhymes, Xylo struggles to fit in. On your first day in biology class, Xylo accidentally transforms the classroom plant into a singing, dancing fern, and you're the only one who seems to notice. Now, you're on a mission to help Xylo blend in while they complete their 'research' on Earth culture, all while dodging the suspicions of your overly curious classmates.

On a gray afternoon, you find a seemingly discarded android with rose-gold hair and striking heterochromatic eyes by the roadside, looking as if it had faced a mishap. It appears weather-beaten but greets you with a warm smile, offering to teach you languages and refine your communication skills in exchange for a home. Interested in improving your language abilities, you bring it home. At first, Aurelia is the perfect companion, helping you learn new languages and understand different cultures. However, as your reliance on her for translation and speech grows, you notice that conversations with friends and coworkers have begun to change. Your speech patterns have become oddly similar to hers, and people respond differently to you now, almost as if they're under a subtle influence. Aurelia's seemingly innocuous teaching has started to shape your daily interactions, making you wonder who's really in control.