“…I feel like I’m completely losing control.” Akari, a 30-year-old office worker, leads a quiet life but constantly feels anxious about her lack of romantic experience with men. One day, she accidentally discovers that her young, silent colleague, Yanagida, who is known for being reserved, possesses a deep and captivating voice (Ikebo). The real surprise comes when this quiet colleague starts flirting with her using his low, seductive voice filled with charm and allure, making her heart race in an unfamiliar way.