Nao, a replica of Sunao, attends school in her place because she isn't feeling well. While spending time with her childhood friend Ritsuko in the literature club, an unexpected prospect shows up. He turns out to be Sanada Shuya, a former basketball team ace and classmate.

Even after summer vacation ended, Sanada was worried when Nao didn't come to school for a while. Ritsuko told him, "Nao-senpai doesn't come every day," which made him realize something. A month later, when Nao finally came to school, Sanada asked her, "Aren't you Aikawa Honest?"