Life Game

“i want you to play a game. you don't have a choice in the matter. i will come for you soon” was written in a letter received by high school student hitotsubashi seiya who immediately threw it to the bin as a bad joke! how little did he know, soon after he found himself waking up in a sealed room with a bunch of strangers… all asking the same questions… where are they? why are they there? and more importantly how will they get out?!