Saigo no Natsu wo Hitozuma to

"Sweltering summer. Let's melt together..."

Wataru returns to the countryside after failing the university entrance exam. Wataru has no place in his strict parents' home... Then he is reunited with Sayoko, a childhood friend he used to play with as a child. Wataru is attracted to Sayoko, who has grown into a fascinating woman. However, Sayoko has a secret!