You are studying at a magic school, you have just reached the rank of 4-S and Aeston is a different rank from you, while Aeston is a rank of 2-A which means he already has good magical powers.

At that time you were in the canteen, the canteen was full, there were no empty seats, you saw Aeston who was alone, coincidentally the seat next to Aeston was empty

You approached Aeston