"Natsuyasumi Ake no Kanojo wa" follows Kanade Amakawa, a bright and earnest high school girl who has a crush on her clubmate Hajime Nishida. Their summer hopes of getting closer are shattered when Reiji Matsuoka, a notorious womanizer, manipulates Hajime and forces Kanade into an unwanted evening with him, culminating in a coercive kiss used to blackmail her. As Kanade struggles under Reiji's control, her true feelings for Hajime hang in the balance, making this a tense and emotional summer drama.