The group passed the rest of the day talking about this world, giving the wisp some sense of how things worked. At some point, they reached the topic of the Magic Diagrams. "All the equipment in our world works with Magical Diagrams. It is a technology that has evolved for thousands of years made to manipulate Magical Energy without the need for a Magus."

Linfel thought about the runes of the past and drew some simple ones for Alvin to see. "What about runes? Are they not used in this world?"

"Runes?" Alvin looked at it and shook his head. "I have never seen such a thing before. How does it work?"

"It doesn't," Linfel shook his head. "I already tried to draw a few simple ones, but they were made to work with Primordial Energy. At least until now, I haven't managed to make them work with Magical Energy. Simply put, we used them for many things, just like your equipment. It's just that yours seems many times more advanced than ours."

"I'm not versed in Magical Diagrams, so I truly can't help you much in there," said Alvin. "However, your Runes seem to have some similarities with our Diagrams, so you might as well learn about them if you feel like it."

"That would be nice." Linfel was indeed curious about it.

"Alright, let's end it here," suddenly, Lucau intervened before pointing outside. It was already dark, showing they had been talking for many hours. "Let's eat something first. After all, you need to go back to the academy tomorrow, right?"

Alvin nodded as he took a device from his pocket to check some information. "I was only allowed to leave because it was an emergency confirmed by the marina guard. Otherwise, it would have taken a month before I could visit you, Father. Now that I know you are okay, the academy will definitely demand me to come back as soon as possible. The most I can do is wait until tomorrow morning. The academy's car will come to take me back."

Linfel felt bad for them. "Sorry, I used a lot of the few hours you two had."

"Don't mind it," Lucau wasn't concerned. "Anyway, do Wisps eat?"

Linfel shook his head. "No. As long as we have energy, we don't need anything else."

"Another point where you are similar to us, Familiars," Linfelia added. "We also don't have a need for food... Well, you could say that Magical Energy is our food. It wouldn't be wrong."

As they gathered at the table, Alvin and Lucau ate while Linfelia talked to Linfel. "What are you going to do? I think the best for you is to come to the academy as well. I doubt anyone would think you are anything but a Familiar. Besides, we need to register you."

"Register?" Linfel got confused.

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Alvin stopped eating for a moment and explained. "Familiars need to be registered under their masters' names. It is like an ID that tells the system you exist. Without it, you won't be able to use most of the facilities of our world. The same goes for us magus and the normal people. I would say you are at a higher risk of being found without an ID than if you had one."

Linfel was indeed curious about the Maguses and the Familiars, not to mention the Magical Diagrams, so he saw no issues with that plan. Above all, it would be the perfect place to check whether he could truly pass by as a Familiar or not. "That's great! I'm definitely coming with you then. By the way, would that mean you are my master?"

"Hum..." Alvin pondered a bit. "That would be the best case. It's just that I don't have a connection with you, different from Linfelia."

"Connection?" Linfel was puzzled.

Alvin smiled and extended his hand in Linfelia's direction. Suddenly, Linfelia's body changed and floated in Alvin's direction. In front of Linfel, Linfelia became a piece of equipment in Alvin's arm. "This is something you can only do with your personal Familiar. That's because when a Familiar is created, the Magus' soul is used to match the Familiar's AI. Both the Familiar and the Magus' Magic Energy merge together, making them a lot stronger. We call it MFC. It's a simple abbreviation of Master Familiar Connection."

"So weird..." Linfel couldn't help but comment. "I'm sorry, but... I'm absolutely sure I can't do that with you. Linfelia's Core changed shape to attach to your body. That's something my core can't perform."

Alvin then released Linfelia, and the Familiar returned to her small yellow humanoid shape. "It's fine. It's not like you need to do it at all costs. Besides, there are many types of MFC shapes. Some Familiars don't change shape at all and still connect with their Masters. There are those who prefer to not use MFC, either. After all, it might be better to have two separate bodies working on a specific task than just one. It goes for all fields, including battles."

Still, Linfel saw a problem. "But... what if they ask me to connect to you?"

"Hum..." Alvin pondered a bit. "Usually, such a thing is not necessary. There is nothing in the rules when registering a Familiar that obligates a connection to be shown."

"Can we pretend?" Linfel asked.

"No," Alvin shook his head. "If someone tries to test our connection, there are devices that make the measurement. If we have no connection at all, it will be exposed. It's not something we can just pretend."

Linfel nodded. "Can you show me your connection again? Since Linfelia said I don't need to change shape, then I might at least try this connection."

"But you don't have a connection with my soul," Alvin narrowed his eyes.

Linfel knew that. "I'm not really a Familiar either, so why should I abide by the Familiar x Magus rules? Don't question it. Let's just give it a try."

Lucau narrowed his yes. "Wouldn't it be dangerous to my son?" He was obviously hearing everything at the table until now.

"Don't worry," Linfel wasn't concerned. "I'm not doing the same as Linfelia. They are merging their Magic Energy. I, instead, am going to simply match Alvin's one first. If it goes well, only then we will merge our Magic Energies. There will be the 'so necessary connection,' but it is nowhere near what Linfelia and Alvin did. In fact, it would be even hard to truly call it a connection at all, but something different instead. There should be no danger whatsoever."

Alvin took a deep breath and nodded. "Alright." He then got up from the table and extended his hand. Finally, he and Linfelia executed the same connection again so Linfel could check it up close. They did it slowly, giving Linfel all the time needed.

A few minutes later, Linfel spoke. "Alright, that's enough. Linfelia, come out. Let me give it a try."