After the Apocalypse, I Gave My Pocket Dimension to the State

In my previous life, I kept the space for myself so I could protect my parents, but my stepsister persecuted me, and not one of my parents stood by my side. Heartbroken, I destroyed it myself rather than let it fall into enemy hands. My stepsister and I were both reborn. This time, I won’t choose my family. I’ll hand the space over to the government! As I struggle against my stepsister, the shocking conspiracy behind the apocalypse gradually comes to light. It turns out the apocalypse was caused by this!