My Clone Is After the Disaster

Where I live, I can see the tower of the Superpower Association through the window. I always wanted to go in and take a look. Later, I went in, but in another body. At that time, twelve years had passed since the catastrophe. I followed the team of hunters over the collapsed wall and hunted the nesting beasts in the association hall. On that trip, the reward I received was just enough for my first physical strengthening. After waking up, the power is still there. The tall tower outside the window is still there, and this year's recruitment advertisement for superpowers is playing on the top of the building.