My boyfriend and I accidentally got two systems, one is a hot melt system and the other is a freezing system. My boyfriend laughed and chose the freezing system, while I could only choose the other one. Unexpectedly, a week later, the global glacier apocalypse came and everyone was trapped at home. Food and warmth became the biggest problems. I'm doing fine with the hot melt system. But my boyfriend has always held a grudge against me. He tricked me into climbing to the top of the building and pushed me down immediately after the glacier ended. As soon as I opened my eyes, I found that I was reborn when I was choosing the system.