My daughter and I are from the end of the world

Three years ago, Lin Guzhi, a college graduate, traveled to the end of the world.
Three years later, Lin Guzhi, the first person in the apocalypse, returns with his adopted daughter Lin Xiaoxi.
Having ended his life of wandering and no longer having to worry in fear, he wanted to start a new life with Xiaoxi and experience all the beauty of this world.
The first problem that stood in front of him was how to register Xiaoxi's household registration.
If you want to register Xiaoxi, you have to adopt her first.
But according to the requirements, how could he, a single man, be qualified to adopt?
It's time to find a flash marriage target.
He looked at the female singer Xia Qing who had inexplicably come to live with him under the same roof.