Year One: Explanations

"So, I guess I owe you an explanation, Harry."

Harry nodded decisively. After the strangeness of the shopping trip, he felt he deserved at least that much. The girl ran a hand through her hair.

"Okay, first off, you weren't supposed to catch on that I'm not supposed to be here. The moment I chose to appear, I would have simply integrated with the world, with none the wiser." She smiled ruefully. "I suppose it must've been weird for you to just see me appear from nowhere."

Harry frowned. "But you didn't."

She stilled. "Oh?"

Harry took a deep breath. "I saw… Well, I'm not sure what I saw. It felt like a dream, and a nightmare…" He swallowed. "It was beautiful. And terrible."

She blinked. "A vision?"

Almost subconsciously, Harry moved his bangs away from his scar. "I guess. I…" He swallowed again. "Was… Was that your true form?"

She tilted her head. "Harry. What did you see?"

Harry looked down. "I saw… something. I can't really name it… but it was huge. Immeasurably great and immeasurably complex…" He licked his lips. "Twisting into fractals and dancing through space…"

'Alexandra' was looking at him through lidded eyes. "Right. That's- No, never mind. Go on."

Harry blinked. "Well, it was breaking up. Into… creatures. Impossible creatures, and impossible… people. And one of those… well, I suppose I could call them shards… came toward me. And became you."

The girl was pinching the bridge of her nose. "I swear, I am going to kill him…" She let out a deep sigh. "Okay. Fine. Was there anything else?"

Harry shook his head. "No. just the star."

"Star?"

"Well, yeah. Eight arrows poking outwards, and a ring. That's what a star looks like, right?"

She made a 'huh' noise. "A Chaos Star? Figures." She grinned suddenly. "Lots of chaos incoming, indeed!"

His 'sister' stretched herself out on her bed, which had somehow appeared in his room. Harry wondered how the heck that fit.

"Anyway, that explanation. We got massively derailed with your so-called 'Trigger Vision', anyway."

She ran a hand through her hair, making it look like there had just been a windy day. "I am a being older than your universe, potentially commanding power that would help me reshape all of reality, all of time and space to my specific whims. You have already seen a part of it in use, when I inserted myself into the history of this world." She tried to shrug, found that lying down made it into a sort-of shift instead, and gave it up as a bad job. "As far as anyone besides you is concerned, Alexandra Potter is, and has always been, your twin sister. Even official records and birth certificates confirm this, although naturally your fame overshadows my existence."

She smiled.

"If I were a normal mortal, I would eventually become disillusioned with the world and resentful of you, but thankfully that won't happen. Would it?"

'Alexandra' ran her hand through her hair again. "I have restricted myself into a mortal form. I am still a powerful wiz- witch, but now my power only rivals yours." She snorted. "That isn't really saying much. You are a very powerful wizard, Harry. You have an aptitude for Defence against the Dark Arts, not to mention protecting people, second to practically none aside from Professor Dumbledore himself."

"…What about you?"

"Hmm?"

"What aptitude did you… restrict yourself to?"

She shifted non-committally. "…Something I find fascinating."

"And that is?" Harry pressed.

"Dark Arts and Soul Magic. Simple interest, for now, but I should probably warn you I intend to become a Dark Witch to boot."

Harry crossed his arms. "And why did you come here, in the first place?"

She shrugged, properly this time. "Why does anyone of my kind? Boredom. It sounded like fun."

Yeah, Harry wasn't really sure what to say to that.