—Sorry, teacher, I'm late!

A young man with blue eyes, red hair, and freckles; came running through the door, by his appearance it would seem that he came from running a marathon, his breathing was accelerated and he did not stop sweating as he wore his clothes. Speaking of his clothes: he was wearing a completely white robe. The tunic covered his entire body, except for some black shoes that stood out from the dirt.

—Since today, you were late, tomorrow I will be late —replied the teacher with a smile.

The professor was quite tall and skinny, with black hair and black eyes, in his eyes he had a pair of very fine gold frame circular glasses, he had the aura of a scholar and the smile of a good friend. The most remarkable thing would be his clothes: a robe that completely covered his body. But his tunic was black, contrasting with the young man's.

—Are you planning on standing there for the entire class?—asked the teacher when he saw that the young man did not sit down.

The young man with some embarrassment entered the room. The room was square and not very big: only 15 people would fit in at most. The walls and floor of the room appeared to be made of wood. As lighting, oil lamps were used that illuminated all corners of the room. In the middle of the room there was a large desk where the teacher was sitting waiting and around it forming a square there were 8 smaller desks, but they were all empty.

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—Is there one with an owner?—asked the young man, stunned by the solitude of the room.

—I don't see anyone, boy, but if you notice someone, tell me! So I ran away—answered the teacher.

Noticing the joke, the young man sat down at the desk that seemed less battered by the scratches of bored students.

—Well, your first task, young man, is to introduce yourself to the others—said the professor, taking out a black notebook to write down those present.

—Shouldn't we wait for the others?—asked the young man, looking around the lonely room.

—There are only 2 more—Said the teacher with some anger— A boy who is sick and a girl who is usually absent more than necessary.

—Could you introduce yourself first?—asked the young man with a blush on his face—I never did, and I don't know what to do.

The professor got up from his chair, as a student would do, and said:

—My name is Achilles, I'm 43, and I'm a teacher on the middle floor 4 of 5, hex 8 of 18. You could say that I love discovering mysteries between the shelves, and I have no doubt that I hate meaningless books. When I grow up, I want to continue being a teacher. My parents were merchants.

The professor finished and looked at the young man expectantly. The young man, understanding the teacher's look, stood up and said:

—My name is Adam, I'm 10 years old, and I'm a student at Middle Floor 4 of 5, Hex 8 of 18. You could say I love looking through books, and I have no doubt that I hate cleaning robes. When I grow up, I want to be a collector. My parents are collectors.

—Very good, excellent presentation, Adam—Achilles said with a smile—Do you know why you came to school?