First Day of School: 30,000 Students Transmigrated to Another World

September 2046. Mysterious vortexes tear open the sky above Earth. When dense fog swallows an entire university campus, over 30,000 students and faculty vanish without a trace—transported to an unknown dimension beyond reality. What was supposed to be an ordinary first day of school becomes humanity's first mass transmigration event. Now trapped in an alien realm with nothing but their wits and modern knowledge, can they survive what awaits on the other side?