"Good morning class! Meet your new classmates. They are transferees from another planet but rest assured that both the Headmaster and Vice Headmaster have approved of them as worthy for S-Class."
A fifty-year-old woman wearing glasses introduced Allen, Realius, John, and Axel in front of a class with 15 students. The fifty-year-old woman was the teacher for S-Class.
Allen and his group didn't even bother to introduce themselves as they didn't see any reason to do so. They also didn't need to befriend the other students as they wouldn't be staying in this universe for long except for Realius.
"The unoccupied seats in this classroom are your seats. You can decide among yourself which of those seats are yours as it would be your seat for the entire school year."