Atsuya used summer vacation to visit his aunt Mizuki's house for the first time in a while. I can't look directly at Mizuki's seductive body, which is different from his childhood memories. Atsuya is teased by Mizuki, who is amused by her naive reaction. The next morning, Mizuki asks Atsuya, who is blushing as he remembers what happened last night, "Didn't you see it yesterday?"
