Two years ago, in a distant time and place beyond Earth, a "space-time gate" connecting to other planets was opened. There was a special high school on one of those planets, where the entire campus was controlled by the student council. Students were divided into classes by rank: top-tier, middle-tier, bottom-tier, and low-tier. Student council officers had long oppressed the students, stripping them of all personal freedom. Two years later, a mysterious transfer student named Shuang Shuang arrived, and the gears of fate began turning anew...
