My cousin Yuna-nee, who played with me like a real sister when I was a child. I've been separated for 10 years due to my parents' transfer... Yuna-nee has arrived at our house, where we live as a father and son. Yuna-nee, who has been in 10 years, has grown a lot with her breasts and has become a good woman who can wear amazing miniskirts. What's more, she's always showing her panties without a defense... I wonder if I don't see me as a man or if I'm seducing him... I'm continuing to worry about it.