My summon to another world was even weirder than I expected

A class is summoned to another world. The loner of the class watches how all his classmates are fearful or excited. Only he understands that this is not a game. When they are going to see their classes, Zack´s turn comes soon and .... Eh? What do you mean I don´t have a shitty class? — Description from novelcodex.org