This is a fairy tale of an angel having broken wings... (P/s: I'm not a native English speaker, so if there's any mistake in this novel, please feel no hesitation to remind me. Thank you so much, my friends :) )

A class is suddenly transferred to another world, a world of swords, magic and monsters, but upon the class' arrival to this unknown realm, most of them immediately die from the transfer. Now, the surviving students are coerced into fighting as slaves for an emperor under the pretext of being her...