Guest was a member of the kingdom of kitraina, they were the strongest person in said kingdom, they had been asked to slaughter a cult who's base was recently discovered, so upon arriving they started walking through brutally massicering and overpoweribg the cult members, untill they reached one last room, the last cult member in a desperate last attempt for their life activated a magic circle on the floor, it lit up with a bright light, and 10 students and 1 teacher appeard from earth, of course the summoning had given them magic and other overpowered abilities but the class and Guest dont know that yet