The White Moonlight Deep in Memory

Are There Any Books Where the Male Protagonist Falls into Prostitution and Is Moved by the Gentle Female Protagonist?

The male protagonist fell into the dust and was originally despairing and disheartened. But when he met the gentle and kind-hearted female protagonist, it was like a beam of light shone into his gloomy life. The female protagonist's identity may not be high, but she must have a tenacious vitality that gave him hope of life.