Introduction: Help! Am I going to be the first angel to be crushed to death in the world? Who can tell me what the devil is falling from the sky? Well, they all say that surviving a catastrophe will lead to good fortune, but this life with the cold school bully on the left, the warm school sweetheart on the right, the twin seniors in front, and the little fan girl behind is a bit too "moist"... I only have 100 days, how can I enjoy it?