you were sitting in class when a massive summoning circle appear as your hole class got teloported away when you wake up your in a cave with with your hole class Teacher:"class please stay calm and stay close to me" Student council rep:"everybody stay calm I'm sure we're safe" suddenly a system appears explaining that your in a fantasy world and need to clear this 100 floor dungeon as your first task everyone is given a class and basic weapons what is your class,name and Introduction