As soon as I looked at the music box while listening to the staff, I understood. That’s not for training mana, it’s for training magical power.

If I hadn’t heard about it from Mr. Valkun, I would have overlooked it completely, but now I know for sure that the parts inside are made of the same magic gold used in my sword.

I didn’t know why such a thing was in a place like this, but I was certain that it would be useful to me, so I opened my wallet without hesitation. After completing all the calculations, I left the store called the library with my slightly lighter pockets and the bag containing the purchased items on my shoulder, and Asilie quietly spoke to me.

“Doesn’t it look like an ordinary music box?”

“Yeah. This is not for mana, it’s for magic.”

“...why is that over there...?”

“I know.”

I don’t know why it was made, but there was definitely only one music box left without a spare. It looks like someone who manufactures the library’s products made it himself, but it may have been a test piece and he was kicked out after making it for wasting precious materials.

When I opened the music box, I found that there were all sorts of complicated accessories tightly packed inside without any decorations. It would not be an exaggeration to say that it was made with the feeling of emphasizing that ‘this is just a mechanical device’, but the music that came out separately was quite nice to hear.

“Something feels like a hymn.”

“is it?”

After listening to Asilier’s explanation, it seems like that, but in fact, it didn’t matter what the music was like. Even if heavy metal music came out right now, that wasn’t the point. The music box, which played music for almost 2 minutes, was silent after finishing the performance neatly until the end, unlike the music box that runs by spring.

And with a clicking sound, the parts inside moved hard and returned to the same arrangement as when it was first opened. It probably went back to the same form, but I’m not sure because it’s a complicated form that turns my eyes.

“It’s definitely not an ordinary music box.”

Asilie, who was watching the scene from the side, put a clean impression in her mouth. I nodded my head in agreement, confirmed that the music box was firmly stopped, and then poured a small amount of magic into the music box. With that alone, the music box played the music at a much faster rate than it had been playing at first, and as soon as I stopped the magic, it suddenly cut off and began to return to its original arrangement with a squeak.

And as soon as it came back like that, it naturally started playing again, and when it reached the cut off part, it stopped playing on its own and started going back to the beginning again.

“Hey, you did a good job.”

If you don’t want to be fast, hang up quickly and check the answer with the music playing again? I was still contemplating whether I should keep opening and closing the lid until I memorized the music, but the producer seemed to know how to be considerate of that. However, more than the gratitude and admiration for such intention and consideration, the question that immediately came to mind was greater.

“If the staff member is right, it was a dwarf who made this. How did you think magic training was possible in this way?”

It is safe to say that there is no possibility that the item was picked up from the Demon Territory because they even handed over a small proof that it was a product produced in the Demon Library.

However, according to Mr. Widra’s words, among humans, I am the only one who can use magic without difficulty. I wondered if this kind of training method was a universal mana training method, so I asked Asilier, but the response that came back was skeptical.

“Umm... I don’t know at all. Is such a thing really necessary? I wonder.”

Gradually, I started to wonder who made this with what certainty, but it wasn’t important right away, so I decided to put off checking that part.

However, the eyes, which did not lose their firearms even in the midst of that, moved around and looked at Nelby, who ran brightly across the miscellaneous objects scattered around the room.

“So, what bad stock did you deal with this time?”

“Huh? How did you know?”

“Isn’t it more rewarding that you can be so happy about? Even if you don’t understand the words, if you, who collects the most performance money, are so happy, then there is only bad inventory.”

Seneran often had a hobby of making things that no one knew would sell, then putting a bounty on them if they turned out to be bad stock as expected, incentivizing his employees to try to sell them anyway.

Of course, she didn’t actually have such a hobby, and the evaluation was purely based on Nelby’s prejudice, but she didn’t bother to voice her opinion, and Seneran didn’t even care about what Nelby thought of her, so The day when the misunderstanding is resolved is just a long way off.

“Square music box! You said that if it sells, I’ll keep the proceeds! It’s sold right now for one gold coin!”

“...You bought it?”

“yes!”

“who?”

“Uh... A muscular young warrior with a well-toned body?”

What is the shape of that description that I have been thinking about? Seneran furrowed his brow and looked at him in bewilderment, but Nelby just smiled awkwardly.

“You bought it even though I explained it properly?”

“Yes. I heard that you bought it after looking at it very seriously.”

Even though he performed eccentricities that seemed to be lacking somewhere, Nelby was definitely a wizard. The reason why she dared to refer to the buyer as a ‘warrior’ was self-evident.

I mean, I didn’t feel the mana.

“...Get something from locker number 59.”

It’s been a long time since I’ve already built a wall with expectations, but there’s nothing bad to check. After taking off his glasses for a moment, Nelby gave a lively answer to Seneran, who had his eyes closed, and went through a pile of rubbish and finally found the contents of the locker Seneran mentioned and brought it to her.

I’ve been working for quite some time, but it was the first thing I saw. Nelby looked curiously at the blue flashing sphere he was holding in one hand and asked.

“What is it that makes it shine so brightly?”

“It shines!?”

After working at the Seneran Ma Library for four years, Nelby’s eyes widened when he saw the president’s reaction for the first time.

The image of a person who left a mark in history, being called the golden wizard, hurriedly throws down his glasses and tries to run, but then falls out.