On a certain day in a certain month... Yuko Shiraki celebrated her 100th work as an exclusive Madonna actress by shooting at a certain hot spring inn. "All I heard was that I'd be taken on a hot spring trip today... (laughs)," said Yuko. Yes, the shooting and mission assigned to Yuko this time was unscripted x Amateur x real documentary!! She actually got all the sperm from the male guests staying at the inn!! There's laughter and emotion, so please enjoy the culmination of Yuko Shiraki's 9th year as an actress!!