In the monotony of everyday life, hidden desires and impulses linger within everyone. One day, a married woman wishing to escape the weariness of routine embarks on a journey into the unknown—a hot spring trip with unfamiliar men, an extraordinary experience beyond ordinary life. Encountering someone entirely different from herself, she discovers a new side of her being, gradually releasing her mind and body amid confusion and hesitation. This book presents the stories of 21 married women, inviting you into the complex emotions, desires, and mysterious worlds they uncover along the way.