Yuya is excited when he learns that Nanami, the older sister he has admired since childhood, is coming to his house for the first time in a while. - At first, I was nervous and couldn't speak well, but as we spent time together, we gradually started to open up. - With the help of alcohol, he kisses her. - Yuya couldn't hold back his excitement from experiencing an adult's kiss for the first time, but Nanami also couldn't hold back the tingling in her body. - And Nanami visits Yuya's room late at night...