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My favorite brother and my sister Aimi who lives together. That said, my brother is a salaryman, so I can only spend weekends with my favorite brother. However, I thought I could spend the weekend with my favorite brother after a long absence, but he went to work on a holiday. A tragedy that suddenly happens when Aimi is lonely and has to leave her answering machine. Aimi feels good without knowing that the tragedy is a trap set up by Aimi's older brother. And when I learned that I was deceived, Aimi didn't dislike it ...