"Using that definition I am not aware of multiple worlds inhabited by your species. Where are you from? Do you have access to resources we might find useful for destroying or sealing an evil god?"

"Milliways has all sorts of duplicates, though. And, funny you should ask. I'm working to destroy or seal an evil god too. Milliways let me find where the Master Sword is hidden, which is a big step forward. Where'd that guy go..." She looks around, fails to see Nick. "The guy with the crystal ball might be outside or something, though."

"I have known other worlds to contain echoes of places but not of people. Who is your evil god? Ours is known as Demise."

"Ganon. Hatred and malice incarnate."

"That name is unfamiliar to me but the description resembles entities I know of. Demise is similar. I estimate a 54% probability, conditional on surviving the fight I just escaped, that we can destroy Demise with the aid of my creator, Hylia, and am willing to consider a positive-sum deal with you to destroy both Demise and Ganon if you help us now."

"Hylia? The Great Goddess Hylia? She's helping me too. Huh... Parallel worlds..."

"If you truly serve Hylia then our goals are aligned. I estimate that the assistance of an additional knight in Hylia's service could more than double my master's chances of survival in the current battle, but it may be that you are more effective in your world. Regardless, we may be better served by sharing information before taking action. I am Fi, the spirit of this sword." It's the same sort of blade as the Master Sword and it looks like its designer had a similar sense of aesthetics. "I am normally not the one to wield it, but I took it to keep it away from monsters when Master Link was unable to keep hold of it during the fight. Our proximate goal on this errand is to strengthen the blade through the use of a sacred flame."

"I have to gather Spirit Orbs from ancient shrines to get strong enough to beat Ganon, and free the Divine Beasts from his influence, and get the Master Sword. We should show each other maps and stuff! Also you should totally get some invulnerable armor and shields from my friend Valanda whenever he comes back. They are so useful for not dying."

"An invulnerable shield would save about ten rupees for every errand we run on the surface. I am unfamiliar with Divine Beasts and Spirit Orbs but can recommend teachers and potion suppliers in my world if you would like."

"Could also save your life if the shield declines to break at an inconvenient time. And I've got the Divine Beasts covered, probably. Potions suppliers might help!"

"We can assist you in reaching the potions shop at the Skyloft bazaar if needed or purchase the potions you need there and return here. How long will this portal remain open?"

"Someone from your world has to be holding the door open, so maybe it wouldn't work. No biggie if so. Oooh, I bet Purah would like to talk about magical technology with you!"

"Will you introduce me to Purah? Is she available now?"

"She's right over there!" Link points to what looks like a small child, surrounded by books and notes, muttering. "I suggest saying something interesting or wrong about magic to get her attention."

"Hello, Purah. It is possible to access other worlds by performing music but only when using certain instruments."

"Maybe it works like that for you! I wouldn't know! But all this magic is so! Cool!"

"It's good to hear you're enjoying it. I am unfamiliar with the feeling but I am sure it is very comfortable. What are you researching at the moment?"

"Magical information processing! Guidance Stones have a specific instruction set, called a rune, pretty much engraved right into their core. They've got mechanisms for transferring the pattern to other magical devices, but they can't take data. Write only! Except these books say there's a different device I don't have that can take a rune, pick it apart, change it, and then make Guidance Stones read the new magical patterns! I want one! A lot!"

"I can see how such a thing would be useful. Would it be helpful to have someone else assess which of these books contain relevant information? I read very quickly."

"Maybe! I kind of don't even know what I'm looking for yet! I'm gonna be in here reading for weeks!"

"Ah, yes, such a period of time would feel long to someone your age."

"Hmph! I'll have you know I am actually a hundred and twelve!"

She certainly looks six or eight or so, though.

"Oh, I've never seen a person like you before. You don't really look biological! Snappy! Are there lots of people like you?"

"I am aware of a small number of others. We are highly useful but extremely difficult to create. If you are a hundred twelve years old, how old was the adult of your species I spoke with before?"

"Hum, hum, hum. Link's a hundred thirty or something. Or just thirty. Ish." She gives a dramatic sigh. "She was frozen for a hundred years, and I had an accident with a de-aging rune. Neither of us're normal. We both don't like talking about it I think though."

"I apologize and I will not mention it again. Link mentioned that someone here had access to healing potions...?"