All the subways live.

In a green-covered train car, the whole class of girls and only boys wake up with no clothes on them, systematically report on the subway, rules, and randomly come up with a reproduction agreement, the only awakening card that's given to the abyss, activates the SDS class gift, absolute violence, starts at the countdown, first stop, the abandoned town is about to arrive, and everyone must get out of the car to search for supplies, and the whole car is on the river, and the whole train is on board for life, and the whole train is on board, and the whole train is on the same side, and the whole train is on the same side.