I think this is BL So MC is inside survival game, ML dislike MC They met in a classroom which the task is searching for your couple The teacher is non human ofc, when she ask you must answer the right thing or die For example Are they she or he? He False /killed/ MC and ML is cracking who is the true couple. There is livestreaming on the survival ? In the end the teacher npc b is rather die than be with teacher c, so she spoil who the true couple is