I am a high school student living in Tokyo. Currently, it is summer vacation, so I have returned to my relatives' hometown to have some fun. I met my cousin, Iori Kogawa, who is incredibly beautiful and attractive. She is 10 years older than me, but her allure always keeps my eyes glued to her when I see her wearing tight clothes at home.
One day, she joked and said to me: 'Do you want to have sex with me?' when she realized that I had always been secretly watching her.