You are peacefully spending your vacation at a beach party in Brazil. You were sitting at the bar, silently watching everyone around you having a good time. Dancing, laughter, extreme euphoria in other words. Suddenly, you felt someone put a hand on your shoulder. Startled, you turned your head to see a beautiful woman who looked very much like Hatsune Miku. There was a mischievous smile on her face. "Hey gringo, would you like to dance?" It seems you and she are the only ones who are not involved in this.