A Story about Living Together with a Runaway Girl

This is a story about an age gap pure love cohabitation with a runaway girl. One rainy winter day as I was making my way home, I found a girl collapsed at the hallway to my apartment. I didn't have much choice but to take her into my house, but she's determined not to go home. I couldn't forcibly kick her out, and while gradually spending time with her, I became attached. (Source: DLsite)